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3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
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11   * Unless required by applicable law or agreed to in writing, software
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14   * See the License for the specific language governing permissions and
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17  package org.orekit.models.earth.atmosphere;
18  
19  import org.hipparchus.CalculusFieldElement;
20  import org.hipparchus.Field;
21  import org.hipparchus.exception.LocalizedCoreFormats;
22  import org.hipparchus.geometry.euclidean.threed.FieldVector3D;
23  import org.hipparchus.geometry.euclidean.threed.Vector3D;
24  import org.hipparchus.util.FastMath;
25  import org.hipparchus.util.FieldSinCos;
26  import org.hipparchus.util.MathArrays;
27  import org.hipparchus.util.SinCos;
28  import org.orekit.annotation.DefaultDataContext;
29  import org.orekit.bodies.BodyShape;
30  import org.orekit.bodies.FieldGeodeticPoint;
31  import org.orekit.bodies.GeodeticPoint;
32  import org.orekit.data.DataContext;
33  import org.orekit.errors.OrekitException;
34  import org.orekit.errors.OrekitMessages;
35  import org.orekit.frames.Frame;
36  import org.orekit.time.AbsoluteDate;
37  import org.orekit.time.DateTimeComponents;
38  import org.orekit.time.FieldAbsoluteDate;
39  import org.orekit.time.TimeComponents;
40  import org.orekit.time.TimeScale;
41  import org.orekit.utils.IERSConventions;
42  import org.orekit.utils.ExtendedPositionProvider;
43  
44  import java.util.Arrays;
45  
46  
47  /** This class implements the mathematical representation of the 2001
48   *  Naval Research Laboratory Mass Spectrometer and Incoherent Scatter
49   *  Radar Exosphere (NRLMSISE-00) of the MSIS® class model.
50   *  <p>
51   *  NRLMSISE-00 calculates the neutral atmosphere empirical model from the surface
52   *  to lower exosphere (0 to 1000 km) and provides:
53   *  <ul>
54   *  <li>Exospheric Temperature above Input Position (K)</li>
55   *  <li>Local Temperature at Input Position (K)</li>
56   *  <li>Total Mass-Density at Input Position (kg/m³)</li>
57   *  <li>Partial Densities at Input Position (1/m³) for:
58   *  <ul>
59   *      <li>He,</li>
60   *      <li>H,</li>
61   *      <li>N,</li>
62   *      <li>O,</li>
63   *      <li>Ar,</li>
64   *      <li>N2,</li>
65   *      <li>O2,</li>
66   *      <li>anomalous oxygen.</li>
67   *  </ul>
68   *  </li>
69   *  </ul>
70   *  <p>
71   *  The model needs geographical and time information to compute general values,
72   *  but also needs space weather data:
73   *  <ul>
74   *  <li>mean and daily solar flux,</li>
75   *  <li>geomagnetic indices.</li>
76   *  </ul>
77   *  <p>
78   *  Switches can be used to turn on and off particular variations:<br>
79   *  0 is off, 1 is on, and 2 is main effects off but cross terms on.<br>
80   *  The standard value is 1 for all the 23 available switches.<br>
81   *  Function of each switch according to its number:
82   *  <ul>
83   *  <li>#1 - F10.7 effect on mean</li>
84   *  <li>#2 - Independent of time</li>
85   *  <li>#3 - Symmetrical annual</li>
86   *  <li>#4 - Symmetrical semiannual</li>
87   *  <li>#5 - Asymmetrical annual</li>
88   *  <li>#6 - Asymmetrical semiannual</li>
89   *  <li>#7 - Diurnal</li>
90   *  <li>#8 - Semidiurnal</li>
91   *  <li>#9 - Daily Ap [**]</li>
92   *  <li>#10 - All UT, longitudinal effects</li>
93   *  <li>#11 - Longitudinal</li>
94   *  <li>#12 - UT and mixed UT, longitudinal</li>
95   *  <li>#13 - Mixed AP, UT, longitudinal</li>
96   *  <li>#14 - Terdiurnal</li>
97   *  <li>#15 - Departures from diffusive equilibrium</li>
98   *  <li>#16 - All exospheric temperature variations</li>
99   *  <li>#17 - All variations from 120 km temperature (TLB)</li>
100  *  <li>#18 - All lower thermosphere (TN1) temperature variations</li>
101  *  <li>#19 - All 120 km gradient (S) variations</li>
102  *  <li>#20 - All upper stratosphere (TN2) temperature variations</li>
103  *  <li>#21 - All variations from 120 km values (ZLB)</li>
104  *  <li>#22 - All lower mesosphere temperature (TN3) variations</li>
105  *  <li>#23 - Turbopause scale height variations</li>
106  *  </ul>
107  *  [**] Switch #9 is a bit specific:
108  *  <ul>
109  *  <li>set to  1, the daily Ap only is used (first element of ap array),</li>
110  *  <li>set to -1, the entire array of ap is used, including 3 hr ap indices.</li>
111  *  </ul>
112  *  <p>
113  *  The NRLMSISE-00 model was developed by Mike Picone, Alan Hedin, and Doug Drob.<br>
114  *  They also wrote a NRLMSISE-00 distribution package in FORTRAN available at:<br>
115  *  ftp://hanna.ccmc.gsfc.nasa.gov/pub/modelweb/atmospheric/msis/nrlmsise00/<br>
116  *  <br>
117  *  Dominik Brodowski implemented a C version of the NRLMSISE-00 model available at:<br>
118  *  http://www.brodo.de/space/nrlmsise/index.html
119  *  <p>
120  *  Instances of this class are immutable.
121  *  </p>
122  *
123  *  @author Mike Picone &amp; al (Naval Research Laboratory), 2001: FORTRAN routine
124  *  @author Dominik Brodowski, 2004: C routine
125  *  @author Pascal Parraud, 2016: Java translation
126  *  @since 8.1
127  */
128 public class NRLMSISE00 extends AbstractSunInfluencedAtmosphere {
129     // Constants
130 
131     /** Identifier for helium density. */
132     private static final int HELIUM = 0;
133 
134     /** Identifier for atomic oxygen density. */
135     private static final int ATOMIC_OXYGEN = 1;
136 
137     /** Identifier for molecular nitrogen density. */
138     private static final int MOLECULAR_NITROGEN = 2;
139 
140     /** Identifier for molecular oxygen density. */
141     private static final int MOLECULAR_OXYGEN = 3;
142 
143     /** Identifier for argon density. */
144     private static final int ARGON = 4;
145 
146     /** Identifier for atomic nitrogen density. */
147     private static final int TOTAL_MASS = 5;
148 
149     /** Identifier for hydrogen density. */
150     private static final int HYDROGEN = 6;
151 
152     /** Identifier for atomic nitrogen density. */
153     private static final int ATOMIC_NITROGEN = 7;
154 
155     /** Identifier for anomalous oxygen density. */
156     private static final int ANOMALOUS_OXYGEN = 8;
157 
158     /** Identifier for exospheric temperature. */
159     private static final int EXOSPHERIC = 0;
160 
161     /** Identifier for temperature at altitude. */
162     private static final int ALTITUDE = 1;
163 
164     // CONVERSION CONSTANTS
165 
166     /** Conversion from degree to radian. */
167     private static final double DEG_TO_RAD = 1.74533e-2;
168 
169     /** Conversion from day to radian. */
170     private static final double DAY_TO_RAD = 1.72142e-2;
171 
172     /** Conversion from hour to radian. */
173     private static final double HOUR_TO_RAD = 0.2618;
174 
175     /** Conversion from second to radian. */
176     private static final double SEC_TO_RAD = 7.2722e-5;
177 
178     // EARTH GEOPHYSICAL CONSTANTS
179 
180     /** Reference latitude (°). */
181     private static final double LAT_REF = 45.;
182 
183     /** Reference gravity on Earth surface at reference latitude (cm/s2). */
184     private static final double G_REF = 980.616;
185 
186     // CHEMICAL CONSTANTS
187 
188     /** Unified atomic mass unit (kg). */
189     private static final double AMU = 1.66e-27;
190 
191     /** Gas constant (inverse of). */
192     private static final double R_GAS = 831.4;
193 
194     /** Hydrogen atomic mass. */
195     private static final double H_MASS = 1.;
196 
197     /** Helium atomic mass. */
198     private static final double HE_MASS = 4.;
199 
200     /** Nitrogen atomic mass. */
201     private static final double N_MASS = 14.;
202 
203     /** N2 molecular mass. */
204     private static final double N2_MASS = 2. * N_MASS;
205 
206     /** Oxygen atomic mass. */
207     private static final double O_MASS = 16.;
208 
209     /** O2 molecular mass. */
210     private static final double O2_MASS = 2. * O_MASS;
211 
212     /** Argon atomic mass. */
213     private static final double AR_MASS = 40.;
214 
215     // NRL MSISE 2000 SPECIFIC CONSTANTS
216 
217     /** Reference average flux. */
218     private static final double FLUX_REF = 150.;
219 
220     /** Array of altitudes #1. */
221     private static final double[] ZN1 = {123.435, 110.0, 100.0, 90.0, 72.5};
222 
223     /** Array of altitudes #2. */
224     private static final double[] ZN2 = {72.5, 55.0, 45.0, 32.5};
225 
226     /** Array of altitudes #3. */
227     private static final double[] ZN3 = {32.5, 20.0, 15.0, 10.0, 0.0};
228 
229     /** Mix altitude (km). */
230     private static final double ZMIX = 62.5;
231 
232     /** NRLMSISE-00 data: temperature pt[150]. */
233     private static final double[] PT = {
234         9.86573e-01, 1.62228e-02, 1.55270e-02, -1.04323e-01, -3.75801e-03,
235         -1.18538e-03, -1.24043e-01, 4.56820e-03, 8.76018e-03, -1.36235e-01,
236         -3.52427e-02, 8.84181e-03, -5.92127e-03, -8.61650e+00, 0.00000e+00,
237         1.28492e-02, 0.00000e+00, 1.30096e+02, 1.04567e-02, 1.65686e-03,
238         -5.53887e-06, 2.97810e-03, 0.00000e+00, 5.13122e-03, 8.66784e-02,
239         1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.27026e-06,
240         0.00000e+00, 6.74494e+00, 4.93933e-03, 2.21656e-03, 2.50802e-03,
241         0.00000e+00, 0.00000e+00, -2.08841e-02, -1.79873e+00, 1.45103e-03,
242         2.81769e-04, -1.44703e-03, -5.16394e-05, 8.47001e-02, 1.70147e-01,
243         5.72562e-03, 5.07493e-05, 4.36148e-03, 1.17863e-04, 4.74364e-03,
244         6.61278e-03, 4.34292e-05, 1.44373e-03, 2.41470e-05, 2.84426e-03,
245         8.56560e-04, 2.04028e-03, 0.00000e+00, -3.15994e+03, -2.46423e-03,
246         1.13843e-03, 4.20512e-04, 0.00000e+00, -9.77214e+01, 6.77794e-03,
247         5.27499e-03, 1.14936e-03, 0.00000e+00, -6.61311e-03, -1.84255e-02,
248         -1.96259e-02, 2.98618e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
249         6.44574e+02, 8.84668e-04, 5.05066e-04, 0.00000e+00, 4.02881e+03,
250         -1.89503e-03, 0.00000e+00, 0.00000e+00, 8.21407e-04, 2.06780e-03,
251         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
252         -1.20410e-02, -3.63963e-03, 9.92070e-05, -1.15284e-04, -6.33059e-05,
253         -6.05545e-01, 8.34218e-03, -9.13036e+01, 3.71042e-04, 0.00000e+00,
254         4.19000e-04, 2.70928e-03, 3.31507e-03, -4.44508e-03, -4.96334e-03,
255         -1.60449e-03, 3.95119e-03, 2.48924e-03, 5.09815e-04, 4.05302e-03,
256         2.24076e-03, 0.00000e+00, 6.84256e-03, 4.66354e-04, 0.00000e+00,
257         -3.68328e-04, 0.00000e+00, 0.00000e+00, -1.46870e+02, 0.00000e+00,
258         0.00000e+00, 1.09501e-03, 4.65156e-04, 5.62583e-04, 3.21596e+00,
259         6.43168e-04, 3.14860e-03, 3.40738e-03, 1.78481e-03, 9.62532e-04,
260         5.58171e-04, 3.43731e+00, -2.33195e-01, 5.10289e-04, 0.00000e+00,
261         0.00000e+00, -9.25347e+04, 0.00000e+00, -1.99639e-03, 0.00000e+00,
262         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
263         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
264     };
265 
266     /** NRLMSISE-00 data: density pd[9][150]. */
267     private static final double[][] PD = {
268         // HE DENSITY
269         {
270             1.09979e+00, -4.88060e-02, -1.97501e-01, -9.10280e-02, -6.96558e-03,
271             2.42136e-02, 3.91333e-01, -7.20068e-03, -3.22718e-02, 1.41508e+00,
272             1.68194e-01, 1.85282e-02, 1.09384e-01, -7.24282e+00, 0.00000e+00,
273             2.96377e-01, -4.97210e-02, 1.04114e+02, -8.61108e-02, -7.29177e-04,
274             1.48998e-06, 1.08629e-03, 0.00000e+00, 0.00000e+00, 8.31090e-02,
275             1.12818e-01, -5.75005e-02, -1.29919e-02, -1.78849e-02, -2.86343e-06,
276             0.00000e+00, -1.51187e+02, -6.65902e-03, 0.00000e+00, -2.02069e-03,
277             0.00000e+00, 0.00000e+00, 4.32264e-02, -2.80444e+01, -3.26789e-03,
278             2.47461e-03, 0.00000e+00, 0.00000e+00, 9.82100e-02, 1.22714e-01,
279             -3.96450e-02, 0.00000e+00, -2.76489e-03, 0.00000e+00, 1.87723e-03,
280             -8.09813e-03, 4.34428e-05, -7.70932e-03, 0.00000e+00, -2.28894e-03,
281             -5.69070e-03, -5.22193e-03, 6.00692e-03, -7.80434e+03, -3.48336e-03,
282             -6.38362e-03, -1.82190e-03, 0.00000e+00, -7.58976e+01, -2.17875e-02,
283             -1.72524e-02, -9.06287e-03, 0.00000e+00, 2.44725e-02, 8.66040e-02,
284             1.05712e-01, 3.02543e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
285             -6.01364e+03, -5.64668e-03, -2.54157e-03, 0.00000e+00, 3.15611e+02,
286             -5.69158e-03, 0.00000e+00, 0.00000e+00, -4.47216e-03, -4.49523e-03,
287             4.64428e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
288             4.51236e-02, 2.46520e-02, 6.17794e-03, 0.00000e+00, 0.00000e+00,
289             -3.62944e-01, -4.80022e-02, -7.57230e+01, -1.99656e-03, 0.00000e+00,
290             -5.18780e-03, -1.73990e-02, -9.03485e-03, 7.48465e-03, 1.53267e-02,
291             1.06296e-02, 1.18655e-02, 2.55569e-03, 1.69020e-03, 3.51936e-02,
292             -1.81242e-02, 0.00000e+00, -1.00529e-01, -5.10574e-03, 0.00000e+00,
293             2.10228e-03, 0.00000e+00, 0.00000e+00, -1.73255e+02, 5.07833e-01,
294             -2.41408e-01, 8.75414e-03, 2.77527e-03, -8.90353e-05, -5.25148e+00,
295             -5.83899e-03, -2.09122e-02, -9.63530e-03, 9.77164e-03, 4.07051e-03,
296             2.53555e-04, -5.52875e+00, -3.55993e-01, -2.49231e-03, 0.00000e+00,
297             0.00000e+00, 2.86026e+01, 0.00000e+00, 3.42722e-04, 0.00000e+00,
298             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
299             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
300         },
301         // O DENSITY
302         {
303             1.02315e+00, -1.59710e-01, -1.06630e-01, -1.77074e-02, -4.42726e-03,
304             3.44803e-02, 4.45613e-02, -3.33751e-02, -5.73598e-02, 3.50360e-01,
305             6.33053e-02, 2.16221e-02, 5.42577e-02, -5.74193e+00, 0.00000e+00,
306             1.90891e-01, -1.39194e-02, 1.01102e+02, 8.16363e-02, 1.33717e-04,
307             6.54403e-06, 3.10295e-03, 0.00000e+00, 0.00000e+00, 5.38205e-02,
308             1.23910e-01, -1.39831e-02, 0.00000e+00, 0.00000e+00, -3.95915e-06,
309             0.00000e+00, -7.14651e-01, -5.01027e-03, 0.00000e+00, -3.24756e-03,
310             0.00000e+00, 0.00000e+00, 4.42173e-02, -1.31598e+01, -3.15626e-03,
311             1.24574e-03, -1.47626e-03, -1.55461e-03, 6.40682e-02, 1.34898e-01,
312             -2.42415e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 6.13666e-04,
313             -5.40373e-03, 2.61635e-05, -3.33012e-03, 0.00000e+00, -3.08101e-03,
314             -2.42679e-03, -3.36086e-03, 0.00000e+00, -1.18979e+03, -5.04738e-02,
315             -2.61547e-03, -1.03132e-03, 1.91583e-04, -8.38132e+01, -1.40517e-02,
316             -1.14167e-02, -4.08012e-03, 1.73522e-04, -1.39644e-02, -6.64128e-02,
317             -6.85152e-02, -1.34414e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
318             6.07916e+02, -4.12220e-03, -2.20996e-03, 0.00000e+00, 1.70277e+03,
319             -4.63015e-03, 0.00000e+00, 0.00000e+00, -2.25360e-03, -2.96204e-03,
320             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
321             3.92786e-02, 1.31186e-02, -1.78086e-03, 0.00000e+00, 0.00000e+00,
322             -3.90083e-01, -2.84741e-02, -7.78400e+01, -1.02601e-03, 0.00000e+00,
323             -7.26485e-04, -5.42181e-03, -5.59305e-03, 1.22825e-02, 1.23868e-02,
324             6.68835e-03, -1.03303e-02, -9.51903e-03, 2.70021e-04, -2.57084e-02,
325             -1.32430e-02, 0.00000e+00, -3.81000e-02, -3.16810e-03, 0.00000e+00,
326             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
327             0.00000e+00, -9.05762e-04, -2.14590e-03, -1.17824e-03, 3.66732e+00,
328             -3.79729e-04, -6.13966e-03, -5.09082e-03, -1.96332e-03, -3.08280e-03,
329             -9.75222e-04, 4.03315e+00, -2.52710e-01, 0.00000e+00, 0.00000e+00,
330             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
331             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
332             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
333         },
334         // N2 DENSITY
335         {
336             1.16112e+00, 0.00000e+00, 0.00000e+00, 3.33725e-02, 0.00000e+00,
337             3.48637e-02, -5.44368e-03, 0.00000e+00, -6.73940e-02, 1.74754e-01,
338             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
339             1.26733e-01, 0.00000e+00, 1.03154e+02, 5.52075e-02, 0.00000e+00,
340             0.00000e+00, 8.13525e-04, 0.00000e+00, 0.00000e+00, 8.66784e-02,
341             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
342             0.00000e+00, -2.50482e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
343             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.48894e-03,
344             6.16053e-04, -5.79716e-04, 2.95482e-03, 8.47001e-02, 1.70147e-01,
345             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
346             0.00000e+00, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
347             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
348             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
349             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
350             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
351             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
352             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
353             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
354             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
355             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
356             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
357             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
358             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
359             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
360             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
361             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
362             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
363             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
364             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
365             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
366         },
367         // TOTAL MASS
368         {
369             9.44846e-01, 0.00000e+00, 0.00000e+00, -3.08617e-02, 0.00000e+00,
370             -2.44019e-02, 6.48607e-03, 0.00000e+00, 3.08181e-02, 4.59392e-02,
371             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
372             2.13260e-02, 0.00000e+00, -3.56958e+02, 0.00000e+00, 1.82278e-04,
373             0.00000e+00, 3.07472e-04, 0.00000e+00, 0.00000e+00, 8.66784e-02,
374             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
375             0.00000e+00, 0.00000e+00, 3.83054e-03, 0.00000e+00, 0.00000e+00,
376             -1.93065e-03, -1.45090e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
377             0.00000e+00, -1.23493e-03, 1.36736e-03, 8.47001e-02, 1.70147e-01,
378             3.71469e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
379             5.10250e-03, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
380             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
381             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
382             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
383             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
384             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
385             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
386             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
387             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
388             0.00000e+00, 3.68756e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
389             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
390             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
391             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
392             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
393             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
394             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
395             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
396             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
397             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
398             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
399         },
400         // O2 DENSITY
401         {
402             1.35580e+00, 1.44816e-01, 0.00000e+00, 6.07767e-02, 0.00000e+00,
403             2.94777e-02, 7.46900e-02, 0.00000e+00, -9.23822e-02, 8.57342e-02,
404             0.00000e+00, 0.00000e+00, 0.00000e+00, 2.38636e+01, 0.00000e+00,
405             7.71653e-02, 0.00000e+00, 8.18751e+01, 1.87736e-02, 0.00000e+00,
406             0.00000e+00, 1.49667e-02, 0.00000e+00, 0.00000e+00, 8.66784e-02,
407             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
408             0.00000e+00, -3.67874e+02, 5.48158e-03, 0.00000e+00, 0.00000e+00,
409             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
410             0.00000e+00, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
411             1.22631e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
412             8.17187e-03, 3.71617e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
413             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
414             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.10826e-03,
415             -3.13640e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
416             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
417             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
418             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
419             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
420             -7.35742e-02, -5.00266e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
421             0.00000e+00, 1.94965e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
422             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
423             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
424             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
425             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
426             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
427             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
428             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
429             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
430             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
431             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
432         },
433         // AR DENSITY
434         {
435             1.04761e+00, 2.00165e-01, 2.37697e-01, 3.68552e-02, 0.00000e+00,
436             3.57202e-02, -2.14075e-01, 0.00000e+00, -1.08018e-01, -3.73981e-01,
437             0.00000e+00, 3.10022e-02, -1.16305e-03, -2.07596e+01, 0.00000e+00,
438             8.64502e-02, 0.00000e+00, 9.74908e+01, 5.16707e-02, 0.00000e+00,
439             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 8.66784e-02,
440             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
441             0.00000e+00, 3.46193e+02, 1.34297e-02, 0.00000e+00, 0.00000e+00,
442             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.48509e-03,
443             -1.54689e-04, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
444             1.47753e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
445             1.89320e-02, 3.68181e-05, 1.32570e-02, 0.00000e+00, 0.00000e+00,
446             3.59719e-03, 7.44328e-03, -1.00023e-03, -6.50528e+03, 0.00000e+00,
447             1.03485e-02, -1.00983e-03, -4.06916e-03, -6.60864e+01, -1.71533e-02,
448             1.10605e-02, 1.20300e-02, -5.20034e-03, 0.00000e+00, 0.00000e+00,
449             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
450             -2.62769e+03, 7.13755e-03, 4.17999e-03, 0.00000e+00, 1.25910e+04,
451             0.00000e+00, 0.00000e+00, 0.00000e+00, -2.23595e-03, 4.60217e-03,
452             5.71794e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
453             -3.18353e-02, -2.35526e-02, -1.36189e-02, 0.00000e+00, 0.00000e+00,
454             0.00000e+00, 2.03522e-02, -6.67837e+01, -1.09724e-03, 0.00000e+00,
455             -1.38821e-02, 1.60468e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
456             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.51574e-02,
457             -5.44470e-04, 0.00000e+00, 7.28224e-02, 6.59413e-02, 0.00000e+00,
458             -5.15692e-03, 0.00000e+00, 0.00000e+00, -3.70367e+03, 0.00000e+00,
459             0.00000e+00, 1.36131e-02, 5.38153e-03, 0.00000e+00, 4.76285e+00,
460             -1.75677e-02, 2.26301e-02, 0.00000e+00, 1.76631e-02, 4.77162e-03,
461             0.00000e+00, 5.39354e+00, 0.00000e+00, -7.51710e-03, 0.00000e+00,
462             0.00000e+00, -8.82736e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
463             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
464             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
465         },
466         // H DENSITY
467         {
468             1.26376e+00, -2.14304e-01, -1.49984e-01, 2.30404e-01, 2.98237e-02,
469             2.68673e-02, 2.96228e-01, 2.21900e-02, -2.07655e-02, 4.52506e-01,
470             1.20105e-01, 3.24420e-02, 4.24816e-02, -9.14313e+00, 0.00000e+00,
471             2.47178e-02, -2.88229e-02, 8.12805e+01, 5.10380e-02, -5.80611e-03,
472             2.51236e-05, -1.24083e-02, 0.00000e+00, 0.00000e+00, 8.66784e-02,
473             1.58727e-01, -3.48190e-02, 0.00000e+00, 0.00000e+00, 2.89885e-05,
474             0.00000e+00, 1.53595e+02, -1.68604e-02, 0.00000e+00, 1.01015e-02,
475             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.84552e-04,
476             -1.22181e-03, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
477             -1.04927e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, -5.91313e-03,
478             -2.30501e-02, 3.14758e-05, 0.00000e+00, 0.00000e+00, 1.26956e-02,
479             8.35489e-03, 3.10513e-04, 0.00000e+00, 3.42119e+03, -2.45017e-03,
480             -4.27154e-04, 5.45152e-04, 1.89896e-03, 2.89121e+01, -6.49973e-03,
481             -1.93855e-02, -1.48492e-02, 0.00000e+00, -5.10576e-02, 7.87306e-02,
482             9.51981e-02, -1.49422e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
483             2.65503e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
484             0.00000e+00, 0.00000e+00, 0.00000e+00, 6.37110e-03, 3.24789e-04,
485             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
486             6.14274e-02, 1.00376e-02, -8.41083e-04, 0.00000e+00, 0.00000e+00,
487             0.00000e+00, -1.27099e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
488             -3.94077e-03, -1.28601e-02, -7.97616e-03, 0.00000e+00, 0.00000e+00,
489             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
490             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
491             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
492             0.00000e+00, -6.71465e-03, -1.69799e-03, 1.93772e-03, 3.81140e+00,
493             -7.79290e-03, -1.82589e-02, -1.25860e-02, -1.04311e-02, -3.02465e-03,
494             2.43063e-03, 3.63237e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
495             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
496             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
497             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
498         },
499         // N DENSITY
500         {
501             7.09557e+01, -3.26740e-01, 0.00000e+00, -5.16829e-01, -1.71664e-03,
502             9.09310e-02, -6.71500e-01, -1.47771e-01, -9.27471e-02, -2.30862e-01,
503             -1.56410e-01, 1.34455e-02, -1.19717e-01, 2.52151e+00, 0.00000e+00,
504             -2.41582e-01, 5.92939e-02, 4.39756e+00, 9.15280e-02, 4.41292e-03,
505             0.00000e+00, 8.66807e-03, 0.00000e+00, 0.00000e+00, 8.66784e-02,
506             1.58727e-01, 9.74701e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
507             0.00000e+00, 6.70217e+01, -1.31660e-03, 0.00000e+00, -1.65317e-02,
508             0.00000e+00, 0.00000e+00, 8.50247e-02, 2.77428e+01, 4.98658e-03,
509             6.15115e-03, 9.50156e-03, -2.12723e-02, 8.47001e-02, 1.70147e-01,
510             -2.38645e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.37380e-03,
511             -8.41918e-03, 2.80145e-05, 7.12383e-03, 0.00000e+00, -1.66209e-02,
512             1.03533e-04, -1.68898e-02, 0.00000e+00, 3.64526e+03, 0.00000e+00,
513             6.54077e-03, 3.69130e-04, 9.94419e-04, 8.42803e+01, -1.16124e-02,
514             -7.74414e-03, -1.68844e-03, 1.42809e-03, -1.92955e-03, 1.17225e-01,
515             -2.41512e-02, 1.50521e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
516             1.60261e+03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
517             0.00000e+00, 0.00000e+00, 0.00000e+00, -3.54403e-04, -1.87270e-02,
518             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
519             2.76439e-02, 6.43207e-03, -3.54300e-02, 0.00000e+00, 0.00000e+00,
520             0.00000e+00, -2.80221e-02, 8.11228e+01, -6.75255e-04, 0.00000e+00,
521             -1.05162e-02, -3.48292e-03, -6.97321e-03, 0.00000e+00, 0.00000e+00,
522             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
523             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
524             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
525             0.00000e+00, -1.45546e-03, -1.31970e-02, -3.57751e-03, -1.09021e+00,
526             -1.50181e-02, -7.12841e-03, -6.64590e-03, -3.52610e-03, -1.87773e-02,
527             -2.22432e-03, -3.93895e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
528             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
529             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
530             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
531         },
532         // HOT O DENSITY
533         {
534             6.04050e-02, 1.57034e+00, 2.99387e-02, 0.00000e+00, 0.00000e+00,
535             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.51018e+00,
536             0.00000e+00, 0.00000e+00, 0.00000e+00, -8.61650e+00, 1.26454e-02,
537             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
538             0.00000e+00, 5.50878e-03, 0.00000e+00, 0.00000e+00, 8.66784e-02,
539             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
540             0.00000e+00, 0.00000e+00, 6.23881e-02, 0.00000e+00, 0.00000e+00,
541             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
542             0.00000e+00, 0.00000e+00, 0.00000e+00, 8.47001e-02, 1.70147e-01,
543             -9.45934e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
544             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
545             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
546             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
547             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
548             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
549             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
550             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
551             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
552             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
553             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
554             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
555             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
556             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
557             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
558             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
559             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
560             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
561             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
562             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
563             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
564         }
565     };
566 
567     /** NRLMSISE-00 data: ps[150]. */
568     private static final double[] PS = {
569         9.56827e-01, 6.20637e-02, 3.18433e-02, 0.00000e+00, 0.00000e+00,
570         3.94900e-02, 0.00000e+00, 0.00000e+00, -9.24882e-03, -7.94023e-03,
571         0.00000e+00, 0.00000e+00, 0.00000e+00, 1.74712e+02, 0.00000e+00,
572         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
573         0.00000e+00, 2.74677e-03, 0.00000e+00, 1.54951e-02, 8.66784e-02,
574         1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
575         0.00000e+00, 0.00000e+00, 0.00000e+00, -6.99007e-04, 0.00000e+00,
576         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
577         0.00000e+00, 1.24362e-02, -5.28756e-03, 8.47001e-02, 1.70147e-01,
578         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
579         0.00000e+00, 2.47425e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
580         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
581         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
582         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
583         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
584         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
585         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
586         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
587         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
588         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
589         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
590         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
591         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
592         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
593         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
594         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
595         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
596         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
597         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
598         0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
599     };
600 
601     /** NRLMSISE-00 data: TURBO pdl[2][25]. */
602     private static final double[][] PDL = {
603         {
604             1.09930e+00, 3.90631e+00, 3.07165e+00, 9.86161e-01, 1.63536e+01,
605             4.63830e+00, 1.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
606             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
607             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
608             0.00000e+00, 0.00000e+00, 1.28840e+00, 3.10302e-02, 1.18339e-01
609         },
610         {
611             1.00000e+00, 7.00000e-01, 1.15020e+00, 3.44689e+00, 1.28840e+00,
612             1.00000e+00, 1.08738e+00, 1.22947e+00, 1.10016e+00, 7.34129e-01,
613             1.15241e+00, 2.22784e+00, 7.95046e-01, 4.01612e+00, 4.47749e+00,
614             1.23435e+02, -7.60535e-02, 1.68986e-06, 7.44294e-01, 1.03604e+00,
615             1.72783e+02, 1.15020e+00, 3.44689e+00, -7.46230e-01, 9.49154e-01
616         }
617     };
618 
619     /** NRLMSISE-00 data: LOWER BOUNDARY ptm[10]. */
620     private static final double[] PTM = {
621         1.04130e+03, 3.86000e+02, 1.95000e+02, 1.66728e+01, 2.13000e+02,
622         1.20000e+02, 2.40000e+02, 1.87000e+02, -2.00000e+00, 0.00000e+00
623     };
624 
625     /** NRLMSISE-00 data: pdm[8][10]. */
626     private static final double[][] PDM = {
627         {
628             2.45600e+07, 6.71072e-06, 1.00000e+02, 0.00000e+00, 1.10000e+02,
629             1.00000e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
630         },
631         {
632             8.59400E+10, 1.00000e+00, 1.05000e+02, -8.00000e+00, 1.10000e+02,
633             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00
634         },
635         {
636             2.81000E+11, 0.00000e+00, 1.05000e+02, 2.80000e+01, 2.89500e+01,
637             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
638         },
639         {
640             3.30000E+10, 2.68270e-01, 1.05000e+02, 1.00000e+00, 1.10000e+02,
641             1.00000e+01, 1.10000e+02, -1.00000e+01, 0.00000e+00, 0.00000e+00
642         },
643         {
644             1.33000e+09, 1.19615e-02, 1.05000e+02, 0.00000e+00, 1.10000e+02,
645             1.00000e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00
646         },
647         {
648             1.76100e+05, 1.00000e+00, 9.50000e+01, -8.00000e+00, 1.10000e+02,
649             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00,
650         },
651         {
652             1.00000e+07, 1.00000e+00, 1.05000e+02, -8.00000e+00, 1.10000e+02,
653             1.00000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 0.00000e+00
654         },
655         {
656             1.00000e+06, 1.00000e+00, 1.05000e+02, -8.00000e+00, 5.50000e+02,
657             7.60000e+01, 9.00000e+01, 2.00000e+00, 0.00000e+00, 4.00000e+03
658         }
659     };
660 
661     /** NRLMSISE-00 data: ptl[4][100]. */
662     private static final double[][] PTL = {
663         // TN1(2)
664         {
665             1.00858e+00, 4.56011e-02, -2.22972e-02, -5.44388e-02, 5.23136e-04,
666             -1.88849e-02, 5.23707e-02, -9.43646e-03, 6.31707e-03, -7.80460e-02,
667             -4.88430e-02, 0.00000e+00, 0.00000e+00, -7.60250e+00, 0.00000e+00,
668             -1.44635e-02, -1.76843e-02, -1.21517e+02, 2.85647e-02, 0.00000e+00,
669             0.00000e+00, 6.31792e-04, 0.00000e+00, 5.77197e-03, 8.66784e-02,
670             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
671             0.00000e+00, -8.90272e+03, 3.30611e-03, 3.02172e-03, 0.00000e+00,
672             -2.13673e-03, -3.20910e-04, 0.00000e+00, 0.00000e+00, 2.76034e-03,
673             2.82487e-03, -2.97592e-04, -4.21534e-03, 8.47001e-02, 1.70147e-01,
674             8.96456e-03, 0.00000e+00, -1.08596e-02, 0.00000e+00, 0.00000e+00,
675             5.57917e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
676             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
677             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
678             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
679             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
680             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
681             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
682             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
683             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
684             0.00000e+00, 9.65405e-03, 0.00000e+00, 0.00000e+00, 2.00000e+00
685         },
686         // TN1(3)
687         {
688             9.39664e-01, 8.56514e-02, -6.79989e-03, 2.65929e-02, -4.74283e-03,
689             1.21855e-02, -2.14905e-02, 6.49651e-03, -2.05477e-02, -4.24952e-02,
690             0.00000e+00, 0.00000e+00, 0.00000e+00, 1.19148e+01, 0.00000e+00,
691             1.18777e-02, -7.28230e-02, -8.15965e+01, 1.73887e-02, 0.00000e+00,
692             0.00000e+00, 0.00000e+00, -1.44691e-02, 2.80259e-04, 8.66784e-02,
693             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
694             0.00000e+00, 2.16584e+02, 3.18713e-03, 7.37479e-03, 0.00000e+00,
695             -2.55018e-03, -3.92806e-03, 0.00000e+00, 0.00000e+00, -2.89757e-03,
696             -1.33549e-03, 1.02661e-03, 3.53775e-04, 8.47001e-02, 1.70147e-01,
697             -9.17497e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
698             3.56082e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
699             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
700             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
701             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
702             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
703             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
704             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
705             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
706             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
707             0.00000e+00, -1.00902e-02, 0.00000e+00, 0.00000e+00, 2.00000e+00
708         },
709         // TN1(4)
710         {
711             9.85982e-01, -4.55435e-02, 1.21106e-02, 2.04127e-02, -2.40836e-03,
712             1.11383e-02, -4.51926e-02, 1.35074e-02, -6.54139e-03, 1.15275e-01,
713             1.28247e-01, 0.00000e+00, 0.00000e+00, -5.30705e+00, 0.00000e+00,
714             -3.79332e-02, -6.24741e-02, 7.71062e-01, 2.96315e-02, 0.00000e+00,
715             0.00000e+00, 0.00000e+00, 6.81051e-03, -4.34767e-03, 8.66784e-02,
716             1.58727e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
717             0.00000e+00, 1.07003e+01, -2.76907e-03, 4.32474e-04, 0.00000e+00,
718             1.31497e-03, -6.47517e-04, 0.00000e+00, -2.20621e+01, -1.10804e-03,
719             -8.09338e-04, 4.18184e-04, 4.29650e-03, 8.47001e-02, 1.70147e-01,
720             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
721             -4.04337e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
722             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
723             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -9.52550e-04,
724             8.56253e-04, 4.33114e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
725             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.21223e-03,
726             2.38694e-04, 9.15245e-04, 1.28385e-03, 8.67668e-04, -5.61425e-06,
727             1.04445e+00, 3.41112e+01, 0.00000e+00, -8.40704e-01, -2.39639e+02,
728             7.06668e-01, -2.05873e+01, -3.63696e-01, 2.39245e+01, 0.00000e+00,
729             -1.06657e-03, -7.67292e-04, 1.54534e-04, 0.00000e+00, 0.00000e+00,
730             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
731         },
732         // TN1(5) TN2(1)
733         {
734             1.00320e+00, 3.83501e-02, -2.38983e-03, 2.83950e-03, 4.20956e-03,
735             5.86619e-04, 2.19054e-02, -1.00946e-02, -3.50259e-03, 4.17392e-02,
736             -8.44404e-03, 0.00000e+00, 0.00000e+00, 4.96949e+00, 0.00000e+00,
737             -7.06478e-03, -1.46494e-02, 3.13258e+01, -1.86493e-03, 0.00000e+00,
738             -1.67499e-02, 0.00000e+00, 0.00000e+00, 5.12686e-04, 8.66784e-02,
739             1.58727e-01, -4.64167e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
740             4.37353e-03, -1.99069e+02, 0.00000e+00, -5.34884e-03, 0.00000e+00,
741             1.62458e-03, 2.93016e-03, 2.67926e-03, 5.90449e+02, 0.00000e+00,
742             0.00000e+00, -1.17266e-03, -3.58890e-04, 8.47001e-02, 1.70147e-01,
743             0.00000e+00, 0.00000e+00, 1.38673e-02, 0.00000e+00, 0.00000e+00,
744             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
745             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
746             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.60571e-03,
747             6.28078e-04, 5.05469e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
748             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.57829e-03,
749             -4.00855e-04, 5.04077e-05, -1.39001e-03, -2.33406e-03, -4.81197e-04,
750             1.46758e+00, 6.20332e+00, 0.00000e+00, 3.66476e-01, -6.19760e+01,
751             3.09198e-01, -1.98999e+01, 0.00000e+00, -3.29933e+02, 0.00000e+00,
752             -1.10080e-03, -9.39310e-05, 1.39638e-04, 0.00000e+00, 0.00000e+00,
753             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
754         }
755     };
756 
757     /** NRLMSISE-00 data: pma[10][100]. */
758     private static final double[][] PMA = {
759         // TN2(2)
760         {
761             9.81637e-01, -1.41317e-03, 3.87323e-02, 0.00000e+00, 0.00000e+00,
762             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.58707e-02,
763             -8.63658e-03, 0.00000e+00, 0.00000e+00, -2.02226e+00, 0.00000e+00,
764             -8.69424e-03, -1.91397e-02, 8.76779e+01, 4.52188e-03, 0.00000e+00,
765             2.23760e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
766             0.00000e+00, -7.07572e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
767             -4.11210e-03, 3.50060e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
768             0.00000e+00, 0.00000e+00, -8.36657e-03, 1.61347e+01, 0.00000e+00,
769             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
770             0.00000e+00, 0.00000e+00, -1.45130e-02, 0.00000e+00, 0.00000e+00,
771             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
772             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
773             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.24152e-03,
774             6.43365e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
775             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.33255e-03,
776             2.42657e-03, 1.60666e-03, -1.85728e-03, -1.46874e-03, -4.79163e-06,
777             1.22464e+00, 3.53510e+01, 0.00000e+00, 4.49223e-01, -4.77466e+01,
778             4.70681e-01, 8.41861e+00, -2.88198e-01, 1.67854e+02, 0.00000e+00,
779             7.11493e-04, 6.05601e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
780             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
781         },
782         // TN2(3)
783         {
784             1.00422e+00, -7.11212e-03, 5.24480e-03, 0.00000e+00, 0.00000e+00,
785             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -5.28914e-02,
786             -2.41301e-02, 0.00000e+00, 0.00000e+00, -2.12219e+01, -1.03830e-02,
787             -3.28077e-03, 1.65727e-02, 1.68564e+00, -6.68154e-03, 0.00000e+00,
788             1.45155e-02, 0.00000e+00, 8.42365e-03, 0.00000e+00, 0.00000e+00,
789             0.00000e+00, -4.34645e-03, 0.00000e+00, 0.00000e+00, 2.16780e-02,
790             0.00000e+00, -1.38459e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
791             0.00000e+00, 0.00000e+00, 7.04573e-03, -4.73204e+01, 0.00000e+00,
792             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
793             0.00000e+00, 0.00000e+00, 1.08767e-02, 0.00000e+00, 0.00000e+00,
794             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
795             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -8.08279e-03,
796             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.21769e-04,
797             -2.27387e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
798             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.26769e-03,
799             3.16901e-03, 4.60316e-04, -1.01431e-04, 1.02131e-03, 9.96601e-04,
800             1.25707e+00, 2.50114e+01, 0.00000e+00, 4.24472e-01, -2.77655e+01,
801             3.44625e-01, 2.75412e+01, 0.00000e+00, 7.94251e+02, 0.00000e+00,
802             2.45835e-03, 1.38871e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
803             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
804         },
805         // TN2(4) TN3(1)
806         {
807             1.01890e+00, -2.46603e-02, 1.00078e-02, 0.00000e+00, 0.00000e+00,
808             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -6.70977e-02,
809             -4.02286e-02, 0.00000e+00, 0.00000e+00, -2.29466e+01, -7.47019e-03,
810             2.26580e-03, 2.63931e-02, 3.72625e+01, -6.39041e-03, 0.00000e+00,
811             9.58383e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
812             0.00000e+00, -1.85291e-03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
813             0.00000e+00, 1.39717e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
814             0.00000e+00, 0.00000e+00, 9.19771e-03, -3.69121e+02, 0.00000e+00,
815             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
816             0.00000e+00, 0.00000e+00, -1.57067e-02, 0.00000e+00, 0.00000e+00,
817             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
818             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.07265e-03,
819             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.92953e-03,
820             -2.77739e-03, -4.40092e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
821             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.47280e-03,
822             2.95035e-04, -1.81246e-03, 2.81945e-03, 4.27296e-03, 9.78863e-04,
823             1.40545e+00, -6.19173e+00, 0.00000e+00, 0.00000e+00, -7.93632e+01,
824             4.44643e-01, -4.03085e+02, 0.00000e+00, 1.15603e+01, 0.00000e+00,
825             2.25068e-03, 8.48557e-04, -2.98493e-04, 0.00000e+00, 0.00000e+00,
826             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
827         },
828         // TN3(2)
829         {
830             9.75801e-01, 3.80680e-02, -3.05198e-02, 0.00000e+00, 0.00000e+00,
831             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.85575e-02,
832             5.04057e-02, 0.00000e+00, 0.00000e+00, -1.76046e+02, 1.44594e-02,
833             -1.48297e-03, -3.68560e-03, 3.02185e+01, -3.23338e-03, 0.00000e+00,
834             1.53569e-02, 0.00000e+00, -1.15558e-02, 0.00000e+00, 0.00000e+00,
835             0.00000e+00, 4.89620e-03, 0.00000e+00, 0.00000e+00, -1.00616e-02,
836             -8.21324e-03, -1.57757e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
837             0.00000e+00, 0.00000e+00, 6.63564e-03, 4.58410e+01, 0.00000e+00,
838             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
839             0.00000e+00, 0.00000e+00, -2.51280e-02, 0.00000e+00, 0.00000e+00,
840             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
841             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 9.91215e-03,
842             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -8.73148e-04,
843             -1.29648e-03, -7.32026e-05, 0.00000e+00, 0.00000e+00, 0.00000e+00,
844             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -4.68110e-03,
845             -4.66003e-03, -1.31567e-03, -7.39390e-04, 6.32499e-04, -4.65588e-04,
846             -1.29785e+00, -1.57139e+02, 0.00000e+00, 2.58350e-01, -3.69453e+01,
847             4.10672e-01, 9.78196e+00, -1.52064e-01, -3.85084e+03, 0.00000e+00,
848             -8.52706e-04, -1.40945e-03, -7.26786e-04, 0.00000e+00, 0.00000e+00,
849             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
850         },
851         // TN3(3)
852         {
853             9.60722e-01, 7.03757e-02, -3.00266e-02, 0.00000e+00, 0.00000e+00,
854             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.22671e-02,
855             4.10423e-02, 0.00000e+00, 0.00000e+00, -1.63070e+02, 1.06073e-02,
856             5.40747e-04, 7.79481e-03, 1.44908e+02, 1.51484e-04, 0.00000e+00,
857             1.97547e-02, 0.00000e+00, -1.41844e-02, 0.00000e+00, 0.00000e+00,
858             0.00000e+00, 5.77884e-03, 0.00000e+00, 0.00000e+00, 9.74319e-03,
859             0.00000e+00, -2.88015e+03, 0.00000e+00, 0.00000e+00, 0.00000e+00,
860             0.00000e+00, 0.00000e+00, -4.44902e-03, -2.92760e+01, 0.00000e+00,
861             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
862             0.00000e+00, 0.00000e+00, 2.34419e-02, 0.00000e+00, 0.00000e+00,
863             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
864             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.36685e-03,
865             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -4.65325e-04,
866             -5.50628e-04, 3.31465e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
867             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.06179e-03,
868             -3.08575e-03, -7.93589e-04, -1.08629e-04, 5.95511e-04, -9.05050e-04,
869             1.18997e+00, 4.15924e+01, 0.00000e+00, -4.72064e-01, -9.47150e+02,
870             3.98723e-01, 1.98304e+01, 0.00000e+00, 3.73219e+03, 0.00000e+00,
871             -1.50040e-03, -1.14933e-03, -1.56769e-04, 0.00000e+00, 0.00000e+00,
872             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
873         },
874         // TN3(4)
875         {
876             1.03123e+00, -7.05124e-02, 8.71615e-03, 0.00000e+00, 0.00000e+00,
877             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -3.82621e-02,
878             -9.80975e-03, 0.00000e+00, 0.00000e+00, 2.89286e+01, 9.57341e-03,
879             0.00000e+00, 0.00000e+00, 8.66153e+01, 7.91938e-04, 0.00000e+00,
880             0.00000e+00, 0.00000e+00, 4.68917e-03, 0.00000e+00, 0.00000e+00,
881             0.00000e+00, 7.86638e-03, 0.00000e+00, 0.00000e+00, 9.90827e-03,
882             0.00000e+00, 6.55573e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
883             0.00000e+00, 0.00000e+00, 0.00000e+00, -4.00200e+01, 0.00000e+00,
884             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
885             0.00000e+00, 0.00000e+00, 7.07457e-03, 0.00000e+00, 0.00000e+00,
886             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
887             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.72268e-03,
888             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.04970e-04,
889             1.21560e-03, -8.05579e-06, 0.00000e+00, 0.00000e+00, 0.00000e+00,
890             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.49941e-03,
891             -4.57256e-04, -1.59311e-04, 2.96481e-04, -1.77318e-03, -6.37918e-04,
892             1.02395e+00, 1.28172e+01, 0.00000e+00, 1.49903e-01, -2.63818e+01,
893             0.00000e+00, 4.70628e+01, -2.22139e-01, 4.82292e-02, 0.00000e+00,
894             -8.67075e-04, -5.86479e-04, 5.32462e-04, 0.00000e+00, 0.00000e+00,
895             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
896         },
897         // TN3(5) SURFACE TEMP TSL
898         {
899             1.00828e+00, -9.10404e-02, -2.26549e-02, 0.00000e+00, 0.00000e+00,
900             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -2.32420e-02,
901             -9.08925e-03, 0.00000e+00, 0.00000e+00, 3.36105e+01, 0.00000e+00,
902             0.00000e+00, 0.00000e+00, -1.24957e+01, -5.87939e-03, 0.00000e+00,
903             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
904             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
905             0.00000e+00, 2.79765e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
906             0.00000e+00, 0.00000e+00, 0.00000e+00, 2.01237e+03, 0.00000e+00,
907             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
908             0.00000e+00, 0.00000e+00, -1.75553e-02, 0.00000e+00, 0.00000e+00,
909             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
910             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
911             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.29699e-03,
912             1.26659e-03, 2.68402e-04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
913             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 1.17894e-03,
914             1.48746e-03, 1.06478e-04, 1.34743e-04, -2.20939e-03, -6.23523e-04,
915             6.36539e-01, 1.13621e+01, 0.00000e+00, -3.93777e-01, 2.38687e+03,
916             0.00000e+00, 6.61865e+02, -1.21434e-01, 9.27608e+00, 0.00000e+00,
917             1.68478e-04, 1.24892e-03, 1.71345e-03, 0.00000e+00, 0.00000e+00,
918             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
919         },
920         // TGN3(2) SURFACE GRAD TSLG
921         {
922             1.57293e+00, -6.78400e-01, 6.47500e-01, 0.00000e+00, 0.00000e+00,
923             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -7.62974e-02,
924             -3.60423e-01, 0.00000e+00, 0.00000e+00, 1.28358e+02, 0.00000e+00,
925             0.00000e+00, 0.00000e+00, 4.68038e+01, 0.00000e+00, 0.00000e+00,
926             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
927             0.00000e+00, -1.67898e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
928             0.00000e+00, 2.90994e+04, 0.00000e+00, 0.00000e+00, 0.00000e+00,
929             0.00000e+00, 0.00000e+00, 0.00000e+00, 3.15706e+01, 0.00000e+00,
930             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
931             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
932             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
933             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
934             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
935             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
936             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
937             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
938             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
939             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
940             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
941             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
942         },
943         // TGN2(1) TGN1(2)
944         {
945             8.60028e-01, 3.77052e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
946             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.17570e+00,
947             0.00000e+00, 0.00000e+00, 0.00000e+00, 7.77757e-03, 0.00000e+00,
948             0.00000e+00, 0.00000e+00, 1.01024e+02, 0.00000e+00, 0.00000e+00,
949             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
950             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
951             0.00000e+00, 6.54251e+02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
952             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
953             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
954             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
955             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
956             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
957             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
958             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
959             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, -1.56959e-02,
960             1.91001e-02, 3.15971e-02, 1.00982e-02, -6.71565e-03, 2.57693e-03,
961             1.38692e+00, 2.82132e-01, 0.00000e+00, 0.00000e+00, 3.81511e+02,
962             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
963             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
964             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
965         },
966         // TGN3(1) TGN2(2)
967         {
968             1.06029e+00, -5.25231e-02, 3.73034e-01, 0.00000e+00, 0.00000e+00,
969             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.31072e-02,
970             -3.88409e-01, 0.00000e+00, 0.00000e+00, -1.65295e+02, -2.13801e-01,
971             -4.38916e-02, -3.22716e-01, -8.82393e+01, 1.18458e-01, 0.00000e+00,
972             -4.35863e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
973             0.00000e+00, -1.19782e-01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
974             0.00000e+00, 2.62229e+01, 0.00000e+00, 0.00000e+00, 0.00000e+00,
975             0.00000e+00, 0.00000e+00, 0.00000e+00, -5.37443e+01, 0.00000e+00,
976             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
977             0.00000e+00, 0.00000e+00, -4.55788e-01, 0.00000e+00, 0.00000e+00,
978             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
979             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
980             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.84009e-02,
981             3.96733e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
982             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 5.05494e-02,
983             7.39617e-02, 1.92200e-02, -8.46151e-03, -1.34244e-02, 1.96338e-02,
984             1.50421e+00, 1.88368e+01, 0.00000e+00, 0.00000e+00, -5.13114e+01,
985             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00,
986             5.11923e-02, 3.61225e-02, 0.00000e+00, 0.00000e+00, 0.00000e+00,
987             0.00000e+00, 0.00000e+00, 0.00000e+00, 0.00000e+00, 2.00000e+00
988         }
989     };
990 
991     /**  NRLMSISE-00 data: MIDDLE ATMOSPHERE AVERAGES pavgm[10]. */
992     private static final double[] PAVGM = {
993         2.61000e+02, 2.64000e+02, 2.29000e+02, 2.17000e+02, 2.17000e+02,
994         2.23000e+02, 2.86760e+02, -2.93940e+00, 2.50000e+00, 0.00000e+00
995     };
996 
997     /** NRLMSISE-00 minimum temperature, used in many cases in density computation. */
998     private static final double MIN_TEMP = 50.;
999 
1000     // Fields
1001 
1002     /** External data container. */
1003     private final NRLMSISE00InputParameters inputParams;
1004 
1005     /** Earth body shape. */
1006     private final BodyShape earth;
1007 
1008     /** Switches for main effects. */
1009     private final int[] sw;
1010 
1011     /** Switches for cross effects. */
1012     private final int[] swc;
1013 
1014     /** UT time scale. */
1015     private final TimeScale ut;
1016 
1017     /** Constructor.
1018      * <p>
1019      * The model is constructed with all switches set to 1.
1020      * </p>
1021      * <p>
1022      * Parameters are mandatory only for the
1023      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1024      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1025      * </p>
1026      *
1027      * <p>This constructor uses the {@link DataContext#getDefault() default data context}.
1028      *
1029      * @param parameters the solar and magnetic activity data
1030      * @param sun the Sun position
1031      * @param earth the Earth body shape
1032      * @see #NRLMSISE00(NRLMSISE00InputParameters, ExtendedPositionProvider, BodyShape,
1033      * TimeScale)
1034      */
1035     @DefaultDataContext
1036     public NRLMSISE00(final NRLMSISE00InputParameters parameters,
1037                       final ExtendedPositionProvider sun,
1038                       final BodyShape earth) {
1039         this(parameters, sun, earth,
1040                 DataContext.getDefault().getTimeScales()
1041                         .getUT1(IERSConventions.IERS_2010, true));
1042     }
1043 
1044     /** Constructor.
1045      * <p>
1046      * The model is constructed with all switches set to 1.
1047      * </p>
1048      * <p>
1049      * Parameters are mandatory only for the
1050      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1051      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1052      * </p>
1053      * @param parameters the solar and magnetic activity data
1054      * @param sun the Sun position
1055      * @param earth the Earth body shape
1056      * @param ut UT time scale. The original documentation for NRLMSISE00 does not
1057      *           distinguish between UTC and UT1. In Orekit 10.0 {@code
1058      *           TimeScalesFactory.getUT1(IERSConventions.IERS_2010, true)} was used.
1059      * @since 10.1
1060      */
1061     public NRLMSISE00(final NRLMSISE00InputParameters parameters,
1062                       final ExtendedPositionProvider sun,
1063                       final BodyShape earth,
1064                       final TimeScale ut) {
1065         this(parameters, sun, earth, allOnes(), allOnes(), ut);
1066     }
1067 
1068     /** Constructor.
1069      * <p>
1070      * The model is constructed with all switches set to 1.
1071      * </p>
1072      * <p>
1073      * Parameters are mandatory only for the
1074      * {@link #getDensity(AbsoluteDate, Vector3D, Frame) getDensity()} and
1075      * {@link #getVelocity(AbsoluteDate, Vector3D, Frame) getVelocity()} methods.
1076      * </p>
1077      * @param parameters the solar and magnetic activity data
1078      * @param sun the Sun position
1079      * @param earth the Earth body shape
1080      * @param sw switches for main effects
1081      * @param swc switches for cross effects
1082      * @param ut UT time scale.
1083      */
1084     private NRLMSISE00(final NRLMSISE00InputParameters parameters,
1085                        final ExtendedPositionProvider sun,
1086                        final BodyShape earth,
1087                        final int[] sw,
1088                        final int[] swc,
1089                        final TimeScale ut) {
1090         super(sun);
1091         this.inputParams = parameters;
1092         this.earth       = earth;
1093         this.sw          = sw;
1094         this.swc         = swc;
1095         this.ut = ut;
1096     }
1097 
1098     /** Change a switch.
1099      * <p>
1100      * This method creates a new instance, the current instance is
1101      * not changed at all!
1102      * </p>
1103      * @param number switch number between 1 and 23
1104      * @param value switch value
1105      * @return a <em>new</em> instance, with switch changed
1106      */
1107     public NRLMSISE00 withSwitch(final int number, final int value) {
1108         if (number < 1 || number > 23) {
1109             throw new OrekitException(LocalizedCoreFormats.OUT_OF_RANGE_SIMPLE, number, 1, 23);
1110         }
1111 
1112         final int[] newSw       = sw.clone();
1113         final int[] newSwc      = swc.clone();
1114         if (number != 9) {
1115             newSw[number]  = (value == 1) ? 1 : 0;
1116             newSwc[number] = (value > 0) ? 1 : 0;
1117         } else {
1118             if (value == -1 || value == 1) {
1119                 newSw[number] = value;
1120             } else {
1121                 newSw[number] = 0;
1122             }
1123             newSwc[number] = newSw[number];
1124         }
1125 
1126         return new NRLMSISE00(inputParams, getSun(), earth, newSwc, newSwc, ut);
1127 
1128     }
1129 
1130     /** Create an array of switches set to 1.
1131      * @return array of switches
1132      */
1133     private static int[] allOnes() {
1134         final int[] array = new int[24];
1135         Arrays.fill(array, 1);
1136         return array;
1137     }
1138 
1139     /** {@inheritDoc} */
1140     @Override
1141     public Frame getFrame() {
1142         return earth.getBodyFrame();
1143     }
1144 
1145     /** {@inheritDoc} */
1146     @Override
1147     public double getDensity(final AbsoluteDate date,
1148                              final Vector3D position,
1149                              final Frame frame) {
1150 
1151         // check if data are available :
1152         if (!date.isBetweenOrEqualTo(inputParams.getMinDate(), inputParams.getMaxDate())) {
1153             throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE,
1154                                       date, inputParams.getMinDate(), inputParams.getMaxDate());
1155         }
1156 
1157         // compute day number in current year and the seconds within the day
1158         final DateTimeComponents dtc = date.getComponents(ut);
1159         final int    doy = dtc.getDate().getDayOfYear();
1160         final double sec = dtc.getTime().getSecondsInLocalDay();
1161 
1162         // compute geodetic position (km and °)
1163         final GeodeticPoint inBody = earth.transform(position, frame, date);
1164         final double alt = inBody.getAltitude() / 1000.;
1165         final double lon = FastMath.toDegrees(inBody.getLongitude());
1166         final double lat = FastMath.toDegrees(inBody.getLatitude());
1167 
1168         // compute local solar time
1169         final double lst = localSolarTime(date, position, frame);
1170 
1171         // get solar activity data and compute
1172         final Output out = new Output(doy, sec, lat, lon, lst, inputParams.getAverageFlux(date),
1173                                       inputParams.getDailyFlux(date), inputParams.getAp(date));
1174         out.gtd7d(alt);
1175 
1176         // return the local density
1177         return out.getDensity(TOTAL_MASS);
1178 
1179     }
1180 
1181     /** {@inheritDoc} */
1182     @Override
1183     public <T extends CalculusFieldElement<T>> T getDensity(final FieldAbsoluteDate<T> date,
1184                                                         final FieldVector3D<T> position,
1185                                                         final Frame frame) {
1186         // check if data are available :
1187         final AbsoluteDate dateD = date.toAbsoluteDate();
1188         if (!dateD.isBetweenOrEqualTo(inputParams.getMinDate(), inputParams.getMaxDate())) {
1189             throw new OrekitException(OrekitMessages.NO_SOLAR_ACTIVITY_AT_DATE,
1190                                       dateD, inputParams.getMinDate(), inputParams.getMaxDate());
1191         }
1192 
1193         // compute day number in current year and the seconds within the day
1194         final DateTimeComponents dtc = dateD.getComponents(ut);
1195         final int    doy = dtc.getDate().getDayOfYear();
1196         final T sec = date.durationFrom(new AbsoluteDate(dtc.getDate(), TimeComponents.H00, ut));
1197 
1198         // compute geodetic position (km and °)
1199         final FieldGeodeticPoint<T> inBody = earth.transform(position, frame, date);
1200         final T alt = inBody.getAltitude().divide(1000.);
1201         final T lon = FastMath.toDegrees(inBody.getLongitude());
1202         final T lat = FastMath.toDegrees(inBody.getLatitude());
1203 
1204         // compute local solar time
1205         final T lst = localSolarTime(date, position, frame);
1206 
1207         // get solar activity data and compute
1208         final FieldOutput<T> out = new FieldOutput<>(doy, sec, lat, lon, lst,
1209                                                      inputParams.getAverageFlux(dateD),
1210                                                      inputParams.getDailyFlux(dateD), inputParams.getAp(dateD));
1211         out.gtd7d(alt);
1212 
1213         // return the local density
1214         return out.getDensity(TOTAL_MASS);
1215 
1216     }
1217 
1218     /** Get local solar time.
1219      * @param date current date
1220      * @param position current position in frame
1221      * @param frame the frame in which is defined the position
1222      * @return the local solar time (hour in [0, 24[)
1223      */
1224     private double localSolarTime(final AbsoluteDate date,
1225                                   final Vector3D position,
1226                                   final Frame frame) {
1227         final Vector3D sunPos = getSunPosition(date, frame);
1228         final double lst = FastMath.PI + FastMath.atan2(
1229                 sunPos.getX() * position.getY() - sunPos.getY() * position.getX(),
1230                 sunPos.getX() * position.getX() + sunPos.getY() * position.getY());
1231         return lst * 12. / FastMath.PI;
1232     }
1233 
1234     /** Get local solar time.
1235      * @param date current date
1236      * @param position current position in frame
1237      * @param frame the frame in which is defined the position
1238      * @param <T> type of the filed elements
1239      * @return the local solar time (hour in [0, 24[)
1240      */
1241     private <T extends CalculusFieldElement<T>> T localSolarTime(final FieldAbsoluteDate<T> date,
1242                                                              final FieldVector3D<T> position,
1243                                                              final Frame frame) {
1244         final FieldVector3D<T> sunPos = getSunPosition(date, frame);
1245         final T y  = position.getY().multiply(sunPos.getX()).subtract(position.getX().multiply(sunPos.getY()));
1246         final T x  = position.getX().multiply(sunPos.getX()).add(position.getY().multiply(sunPos.getY()));
1247         final T hl = y.atan2(x).add(y.getPi());
1248 
1249         return hl.divide(y.getPi()).multiply(12.);
1250 
1251     }
1252 
1253     /**
1254      * This class is a placeholder for the computed densities and temperatures.
1255      * <p>
1256      * Densities are provided as an array d such as:
1257      * <ul>
1258      * <li>d[0] = He number density (1/m³)</li>
1259      * <li>d[1] = O number density (1/m³)</li>
1260      * <li>d[2] = N2 number density (1/m³)</li>
1261      * <li>d[3] = O2 number density (1/m³)</li>
1262      * <li>d[4] = Ar number density (1/m³)</li>
1263      * <li>d[5] = total mass density (kg/m³) (*)</li>
1264      * <li>d[6] = H number density (1/m³)</li>
1265      * <li>d[7] = N number density (1/m³)</li>
1266      * <li>d[8] = anomalous oxygen number density (1/m³)
1267      * </ul>
1268      * Total mass density, d[5], is NOT the same for methods gtd7 and gtd7d:
1269      * <ul>
1270      * <li>For gtd7: d[5] is the sum of the mass densities of the species
1271      * He, O, N2, O2, Ar, H and N but does NOT include anomalous oxygen.</li>
1272      * <li>For gtd7d: d[5] is the "effective total mass density for drag" and is the sum
1273      * of the mass densities of all species in this model, INCLUDING anomalous oxygen.</li>
1274      * </ul>
1275      * O, H, and N are set to zero below 72.5 km.
1276      * </p>
1277      * <p>
1278      * Temperatures are provided as an array t such as:
1279      * <ul>
1280      * <li>t[0] = exospheric temperature (K)</li>
1281      * <li>t[1] = temperature at altitude (K)</li>
1282      * </ul>
1283      * t[0] is set to global average for altitudes below 120 km.<br>
1284      * The 120 km gradient is left at global average value for altitudes below 72 km.
1285      * </p>
1286      */
1287     private class Output {
1288 
1289         /** Day of year (from 1 to 365 or 366). */
1290         private final int doy;
1291 
1292         /** Seconds in day (UT scale). */
1293         private final double sec;
1294 
1295         /** Geodetic latitude (°). */
1296         private final double lat;
1297 
1298         /** Geodetic longitude (°). */
1299         private final double lon;
1300 
1301         /** Local apparent solar time (hours). */
1302         private final double hl;
1303 
1304         /** 81 day average of F10.7 flux (centered on day). */
1305         private final double f107a;
1306 
1307         /** Daily F10.7 flux for previous day. */
1308         private final double f107;
1309 
1310         /** Array containing:
1311         *  <ul>
1312         *  <li>0: daily Ap</li>
1313         *  <li>1: 3 hr ap index for current time</li>
1314         *  <li>2: 3 hr ap index for 3 hrs before current time</li>
1315         *  <li>3: 3 hr ap index for 6 hrs before current time</li>
1316         *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
1317         *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
1318         *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
1319         *  </ul>. */
1320         private final double[] ap;
1321 
1322         /** Gravity at latitude (cm/s2). */
1323         private final double glat;
1324 
1325         /** Effective Earth radius at latitude (km). */
1326         private final double rlat;
1327 
1328         /** N2 mixed density at alt. */
1329         private double dm28;
1330 
1331         /** Legendre polynomials. */
1332         private final double[][] plg;
1333 
1334         /** Cosinus of local solar time. */
1335         private final double ctloc;
1336         /** Sinus of local solar time. */
1337         private final double stloc;
1338         /** Square of ctloc. */
1339         private final double c2tloc;
1340         /** Square of stloc. */
1341         private final double s2tloc;
1342         /** Cube of ctloc. */
1343         private final double c3tloc;
1344         /** Cube of stloc. */
1345         private final double s3tloc;
1346 
1347         /** Magnetic activity based on daily ap. */
1348         private double apdf;
1349 
1350         /** Magnetic activity based on daily ap. */
1351         private double apt;
1352 
1353         /** Temperature at nodes for ZN1 scale. */
1354         private final double[] meso_tn1;
1355 
1356         /** Temperature at nodes for ZN2 scale. */
1357         private final double[] meso_tn2;
1358 
1359         /** Temperature at nodes for ZN3 scale. */
1360         private final double[] meso_tn3;
1361 
1362         /** Temperature gradients at end nodes for ZN1 scale. */
1363         private final double[] meso_tgn1;
1364 
1365         /** Temperature gradients at end nodes for ZN2 scale. */
1366         private final double[] meso_tgn2;
1367 
1368         /** Temperature gradients at end nodes for ZN3 scale. */
1369         private final double[] meso_tgn3;
1370 
1371         /** Densities. */
1372         private final double[] densities;
1373 
1374         /** Temperatures. */
1375         private final double[] temperatures;
1376 
1377         /** Simple constructor.
1378          *  @param doy day of year (from 1 to 365 or 366)
1379          *  @param sec seconds in day (UT scale)
1380          *  @param lat geodetic latitude (°)
1381          *  @param lon geodetic longitude (°)
1382          *  @param hl local apparent solar time (hours)
1383          *  @param f107a 81 day average of F10.7 flux (centered on day)
1384          *  @param f107 daily F10.7 flux for previous day
1385          *  @param ap array containing:
1386          *  <ul>
1387          *  <li>0: daily Ap</li>
1388          *  <li>1: 3 hr ap index for current time</li>
1389          *  <li>2: 3 hr ap index for 3 hrs before current time</li>
1390          *  <li>3: 3 hr ap index for 6 hrs before current time</li>
1391          *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
1392          *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
1393          *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
1394          *  </ul>
1395          */
1396         Output(final int doy, final double sec,
1397                final double lat, final double lon, final double hl,
1398                final double f107a, final double f107, final double[] ap) {
1399 
1400             this.doy   = doy;
1401             this.sec   = sec;
1402             this.lat   = lat;
1403             this.lon   = lon;
1404             this.hl    = hl;
1405             this.f107a = f107a;
1406             this.f107  = f107;
1407             this.ap    = ap.clone();
1408 
1409             this.plg       = new double[4][8];
1410 
1411             this.meso_tn1  = new double[ZN1.length];
1412             this.meso_tn2  = new double[ZN2.length];
1413             this.meso_tn3  = new double[ZN3.length];
1414             this.meso_tgn1 = new double[2];
1415             this.meso_tgn2 = new double[2];
1416             this.meso_tgn3 = new double[2];
1417 
1418             densities       = new double[9];
1419             temperatures    = new double[2];
1420 
1421             // Calculates latitude variable gravity and effective radius
1422             final double xlat = (sw[2] == 0) ? LAT_REF : lat;
1423             final double c2   = FastMath.cos(2 * DEG_TO_RAD * xlat);
1424             glat = G_REF * (1. - .0026373 * c2);
1425             rlat = 2. * glat / (3.085462e-6 + 2.27e-9 * c2) * 1.e-5;
1426 
1427             // Convert latitude into radians
1428             final double latr = DEG_TO_RAD * lat;
1429 
1430             // Calculate legendre polynomials
1431             final SinCos scLatr = FastMath.sinCos(latr);
1432             final double c      = scLatr.sin();
1433             final double s      = scLatr.cos();
1434 
1435             plg[0][1] = c;
1436             plg[0][2] = ( 3.0 * c * plg[0][1] - 1.0) / 2.0;
1437             plg[0][3] = ( 5.0 * c * plg[0][2] - 2.0 * plg[0][1]) / 3.0;
1438             plg[0][4] = ( 7.0 * c * plg[0][3] - 3.0 * plg[0][2]) / 4.0;
1439             plg[0][5] = ( 9.0 * c * plg[0][4] - 4.0 * plg[0][3]) / 5.0;
1440             plg[0][6] = (11.0 * c * plg[0][5] - 5.0 * plg[0][4]) / 6.0;
1441 
1442             plg[1][1] = s;
1443             plg[1][2] =   3.0 * c * plg[1][1];
1444             plg[1][3] = ( 5.0 * c * plg[1][2] - 3.0 * plg[1][1]) / 2.0;
1445             plg[1][4] = ( 7.0 * c * plg[1][3] - 4.0 * plg[1][2]) / 3.0;
1446             plg[1][5] = ( 9.0 * c * plg[1][4] - 5.0 * plg[1][3]) / 4.0;
1447             plg[1][6] = (11.0 * c * plg[1][5] - 6.0 * plg[1][4]) / 5.0;
1448 
1449             plg[2][2] = 3.0 * s * plg[1][1];
1450             plg[2][3] =   5.0 * c * plg[2][2];
1451             plg[2][4] = ( 7.0 * c * plg[2][3] - 5.0 * plg[2][2]) / 2.0;
1452             plg[2][5] = ( 9.0 * c * plg[2][4] - 6.0 * plg[2][3]) / 3.0;
1453             plg[2][6] = (11.0 * c * plg[2][5] - 7.0 * plg[2][4]) / 4.0;
1454             plg[2][7] = (13.0 * c * plg[2][6] - 8.0 * plg[2][5]) / 5.0;
1455 
1456             plg[3][3] = 5.0 * s * plg[2][2];
1457             plg[3][4] =   7.0 * c * plg[3][3];
1458             plg[3][5] = ( 9.0 * c * plg[3][4] - 7.0 * plg[3][3]) / 2.0;
1459             plg[3][6] = (11.0 * c * plg[3][5] - 8.0 * plg[3][4]) / 3.0;
1460 
1461             // Calculate additional data
1462             if (!(sw[7] == 0 && sw[8] == 0 && sw[14] == 0)) {
1463                 final double tloc = HOUR_TO_RAD * hl;
1464                 final SinCos sc  = FastMath.sinCos(tloc);
1465                 final SinCos sc2 = SinCos.sum(sc, sc);
1466                 final SinCos sc3 = SinCos.sum(sc, sc2);
1467                 stloc  = sc.sin();
1468                 ctloc  = sc.cos();
1469                 s2tloc = sc2.sin();
1470                 c2tloc = sc2.cos();
1471                 s3tloc = sc3.sin();
1472                 c3tloc = sc3.cos();
1473             } else {
1474                 stloc  = 0;
1475                 ctloc  = 0;
1476                 s2tloc = 0;
1477                 c2tloc = 0;
1478                 s3tloc = 0;
1479                 c3tloc = 0;
1480             }
1481 
1482         }
1483 
1484         /** Calculate temperatures and densities not including anomalous oxygen.
1485          *  <p>
1486          *  This method is the thermospheric portion of NRLMSISE-00 for alt > 72.5 km.
1487          *  </p>
1488          *  <p>NOTES ON INPUT VARIABLES:<br>
1489          *  Seconds, Local Time, and Longitude are used independently in the
1490          *  model and are not of equal importance for every situation.<br>
1491          *  For the most physically realistic calculation these three
1492          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1493          *  The Equation of Time departures from the above formula
1494          *  for apparent local time can be included if available but
1495          *  are of minor importance.<br><br>
1496          *
1497          *  f107 and f107A values used to generate the model correspond
1498          *  to the 10.7 cm radio flux at the actual distance of the Earth
1499          *  from the Sun rather than the radio flux at 1 AU. The following
1500          *  site provides both classes of values:<br>
1501          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
1502          *
1503          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1504          *  and these parameters should be set to 150., 150., and 4. respectively.
1505          *  </p>
1506          *  @param alt altitude (km)
1507          */
1508         void gts7(final double alt) {
1509 
1510             // Thermal diffusion coefficients for species
1511             final double[] alpha = {-0.38, 0.0, 0.0, 0.0, 0.17, 0.0, -0.38, 0.0, 0.0};
1512             // Altitude limits for net density computation for species
1513             final double[] altl  = {200.0, 300.0, 160.0, 250.0, 240.0, 450.0, 320.0, 450.0};
1514             // N2 mixed density
1515             final double xmm = PDM[2][4];
1516 
1517             /**** Exospheric temperature ****/
1518             double tinf = PTM[0] * PT[0];
1519             // Tinf variations not important below ZA or ZN[0]
1520             if (alt > ZN1[0]) {
1521                 tinf *= 1.0 + sw[16] * globe7(PT);
1522             }
1523             setTemperature(EXOSPHERIC, tinf);
1524 
1525             // Gradient variations not important below ZN[4]
1526             double g0 = PTM[3] * PS[0];
1527             if (alt > ZN1[4]) {
1528                 g0 *= 1.0 + sw[19] * globe7(PS);
1529             }
1530 
1531             // Temperature at lower boundary
1532             double tlb = PTM[1] * PD[3][0];
1533             tlb *= 1.0 + sw[17] * globe7(PD[3]);
1534 
1535             // Slope
1536             final double s = g0 / (tinf - tlb);
1537 
1538             // Lower thermosphere temp variations not significant for density above 300 km
1539             meso_tn1[1]  = PTM[6] * PTL[0][0];
1540             meso_tn1[2]  = PTM[2] * PTL[1][0];
1541             meso_tn1[3]  = PTM[7] * PTL[2][0];
1542             meso_tn1[4]  = PTM[4] * PTL[3][0];
1543             meso_tgn1[1] = PTM[8] * PMA[8][0];
1544             if (alt < 300.0) {
1545                 final double r = PTM[4] * PTL[3][0];
1546                 meso_tn1[1]  /= 1.0 - sw[18] * glob7s(PTL[0]);
1547                 meso_tn1[2]  /= 1.0 - sw[18] * glob7s(PTL[1]);
1548                 meso_tn1[3]  /= 1.0 - sw[18] * glob7s(PTL[2]);
1549                 meso_tn1[4]  /= 1.0 - sw[18] * sw[20] * glob7s(PTL[3]);
1550                 meso_tgn1[1] *= 1.0 + sw[18] * sw[20] * glob7s(PMA[8]);
1551                 meso_tgn1[1] *= meso_tn1[4] * meso_tn1[4] / (r * r);
1552             }
1553 
1554             /**** Temperature at altitude ****/
1555             setTemperature(ALTITUDE, densu(alt, 1.0, tinf, tlb, 0.0, 0.0, PTM[5], s));
1556 
1557             /**** N2 density ****/
1558             /*   Density variation factor at Zlb */
1559             final double g28 = sw[21] * globe7(PD[2]);
1560             /* Diffusive density at Zlb */
1561             final double db28 = PDM[2][0] * FastMath.exp(g28) * PD[2][0];
1562             /* Diffusive density at Alt */
1563             double diffusiveDensity = densu(alt, db28, tinf, tlb, N2_MASS, alpha[2], PTM[5], s);
1564             setDensity(MOLECULAR_NITROGEN, diffusiveDensity);
1565             // Variation of turbopause height
1566             final double zhf = PDL[1][24] * (1.0 + sw[5] * PDL[0][24] *
1567                                        FastMath.sin(DEG_TO_RAD * lat) *
1568                                        FastMath.cos(DAY_TO_RAD * (doy - PT[13])));
1569             /* Turbopause */
1570             final double zh28  = PDM[2][2] * zhf;
1571             final double zhm28 = PDM[2][3] * PDL[1][5];
1572             /* Mixed density at Zlb */
1573             final double b28 = densu(zh28, db28, tinf, tlb, N2_MASS - xmm, alpha[2] - 1.0, PTM[5], s);
1574             if (sw[15] != 0 && alt <= altl[2]) {
1575                 /*  Mixed density at Alt */
1576                 dm28 = densu(alt, b28, tinf, tlb, xmm, alpha[2], PTM[5], s);
1577                 /*  Net density at Alt */
1578                 setDensity(MOLECULAR_NITROGEN, dnet(diffusiveDensity, dm28, zhm28, xmm, N2_MASS));
1579             }
1580 
1581             /**** He density ****/
1582             /*   Density variation factor at Zlb */
1583             final double g4 = sw[21] * globe7(PD[0]);
1584             /*  Diffusive density at Zlb */
1585             final double db04 = PDM[0][0] * FastMath.exp(g4) * PD[0][0];
1586             /*  Diffusive density at Alt */
1587             diffusiveDensity = densu(alt, db04, tinf, tlb, HE_MASS, alpha[0], PTM[5], s);
1588             setDensity(HELIUM, diffusiveDensity);
1589             if (sw[15] != 0 && alt < altl[0]) {
1590                 /*  Turbopause */
1591                 final double zh04 = PDM[0][2];
1592                 /*  Mixed density at Zlb */
1593                 final double b04 = densu(zh04, db04, tinf, tlb, HE_MASS - xmm, alpha[0] - 1., PTM[5], s);
1594                 /*  Mixed density at Alt */
1595                 final double dm04 = densu(alt, b04, tinf, tlb, xmm, 0., PTM[5], s);
1596                 final double zhm04 = zhm28;
1597                 /*  Net density at Alt */
1598                 diffusiveDensity = dnet(diffusiveDensity, dm04, zhm04, xmm, HE_MASS);
1599                 /*  Correction to specified mixing ratio at ground */
1600                 final double rl = FastMath.log(b28 * PDM[0][1] / b04);
1601                 final double zc04 = PDM[0][4] * PDL[1][0];
1602                 final double hc04 = PDM[0][5] * PDL[1][1];
1603                 /*  Net density corrected at Alt */
1604                 setDensity(HELIUM, diffusiveDensity * ccor(alt, rl, hc04, zc04));
1605             }
1606 
1607             /**** O density ****/
1608             /* Density variation factor at Zlb */
1609             final double g16 = sw[21] * globe7(PD[1]);
1610             /* Diffusive density at Zlb */
1611             final double db16 = PDM[1][0] * FastMath.exp(g16) * PD[1][0];
1612             /* Diffusive density at Alt */
1613             diffusiveDensity = densu(alt, db16, tinf, tlb, O_MASS, alpha[1], PTM[5], s);
1614             setDensity(ATOMIC_OXYGEN, diffusiveDensity);
1615             if (sw[15] != 0 && alt < altl[1]) {
1616                 /* Turbopause */
1617                 final double zh16 = PDM[1][2];
1618                 /* Mixed density at Zlb */
1619                 final double b16 = densu(zh16, db16, tinf, tlb, O_MASS - xmm, alpha[1] - 1.0, PTM[5], s);
1620                 /* Mixed density at Alt */
1621                 final double dm16 = densu(alt, b16, tinf, tlb, xmm, 0., PTM[5], s);
1622                 final double zhm16 = zhm28;
1623                 /* Net density at Alt */
1624                 diffusiveDensity = dnet(diffusiveDensity, dm16, zhm16, xmm, O_MASS);
1625                 final double rl = PDM[1][1] * PDL[1][16] * (1.0 + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
1626                 final double hc16 = PDM[1][5] * PDL[1][3];
1627                 final double zc16 = PDM[1][4] * PDL[1][2];
1628                 final double hc216 = PDM[1][5] * PDL[1][4];
1629                 diffusiveDensity *= ccor2(alt, rl, hc16, zc16, hc216);
1630                 /* Chemistry correction */
1631                 final double hcc16 = PDM[1][7] * PDL[1][13];
1632                 final double zcc16 = PDM[1][6] * PDL[1][12];
1633                 final double rc16  = PDM[1][3] * PDL[1][14];
1634                 /* Net density corrected at Alt */
1635                 setDensity(ATOMIC_OXYGEN, diffusiveDensity * ccor(alt, rc16, hcc16, zcc16));
1636             }
1637 
1638             /**** O2 density ****/
1639             /* Density variation factor at Zlb */
1640             final double g32 = sw[21] * globe7(PD[4]);
1641             /* Diffusive density at Zlb */
1642             final double db32 = PDM[3][0] * FastMath.exp(g32) * PD[4][0];
1643             /* Diffusive density at Alt */
1644             diffusiveDensity = densu(alt, db32, tinf, tlb, O2_MASS, alpha[3], PTM[5], s);
1645             setDensity(MOLECULAR_OXYGEN, diffusiveDensity);
1646             if (sw[15] != 0) {
1647                 if (alt <= altl[3]) {
1648                     /* Turbopause */
1649                     final double zh32 = PDM[3][2];
1650                     /* Mixed density at Zlb */
1651                     final double b32 = densu(zh32, db32, tinf, tlb, O2_MASS - xmm, alpha[3] - 1., PTM[5], s);
1652                     /* Mixed density at Alt */
1653                     final double dm32 = densu(alt, b32, tinf, tlb, xmm, 0., PTM[5], s);
1654                     final double zhm32 = zhm28;
1655                     /* Net density at Alt */
1656                     diffusiveDensity = dnet(diffusiveDensity, dm32, zhm32, xmm, O2_MASS);
1657                     /* Correction to specified mixing ratio at ground */
1658                     final double rl = FastMath.log(b28 * PDM[3][1] / b32);
1659                     final double hc32 = PDM[3][5] * PDL[1][7];
1660                     final double zc32 = PDM[3][4] * PDL[1][6];
1661                     diffusiveDensity *= ccor(alt, rl, hc32, zc32);
1662                 }
1663                 /* Correction for general departure from diffusive equilibrium above Zlb */
1664                 final double hcc32  = PDM[3][7] * PDL[1][22];
1665                 final double hcc232 = PDM[3][7] * PDL[0][22];
1666                 final double zcc32  = PDM[3][6] * PDL[1][21];
1667                 final double rc32   = PDM[3][3] * PDL[1][23] * (1. + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
1668                 /* Net density corrected at Alt */
1669                 setDensity(MOLECULAR_OXYGEN, diffusiveDensity * ccor2(alt, rc32, hcc32, zcc32, hcc232));
1670             }
1671 
1672             /**** Ar density ****/
1673             /* Density variation factor at Zlb */
1674             final double g40 = sw[21] * globe7(PD[5]);
1675             /* Diffusive density at Zlb */
1676             final double db40 = PDM[4][0] * FastMath.exp(g40) * PD[5][0];
1677             /* Diffusive density at Alt */
1678             diffusiveDensity = densu(alt, db40, tinf, tlb, AR_MASS, alpha[4], PTM[5], s);
1679             setDensity(ARGON, diffusiveDensity);
1680             if (sw[15] != 0 && alt <= altl[4]) {
1681                 /* Turbopause */
1682                 final double zh40 = PDM[4][2];
1683                 /* Mixed density at Zlb */
1684                 final double b40 = densu(zh40, db40, tinf, tlb, AR_MASS - xmm, alpha[4] - 1., PTM[5], s);
1685                 /* Mixed density at Alt */
1686                 final double dm40 = densu(alt, b40, tinf, tlb, xmm, 0., PTM[5], s);
1687                 final double zhm40 = zhm28;
1688                 /* Net density at Alt */
1689                 diffusiveDensity = dnet(diffusiveDensity, dm40, zhm40, xmm, AR_MASS);
1690                 /* Correction to specified mixing ratio at ground */
1691                 final double rl = FastMath.log(b28 * PDM[4][1] / b40);
1692                 final double hc40 = PDM[4][5] * PDL[1][9];
1693                 final double zc40 = PDM[4][4] * PDL[1][8];
1694                 /* Net density corrected at Alt */
1695                 setDensity(ARGON, diffusiveDensity * ccor(alt, rl, hc40, zc40));
1696             }
1697 
1698             /**** H density ****/
1699             /* Density variation factor at Zlb */
1700             final double g1 = sw[21] * globe7(PD[6]);
1701             /* Diffusive density at Zlb */
1702             final double db01 = PDM[5][0] * FastMath.exp(g1) * PD[6][0];
1703             /* Diffusive density at Alt */
1704             diffusiveDensity = densu(alt, db01, tinf, tlb, H_MASS, alpha[6], PTM[5], s);
1705             setDensity(HYDROGEN, diffusiveDensity);
1706             if (sw[15] != 0 && alt <= altl[6]) {
1707                 /* Turbopause */
1708                 final double zh01 = PDM[5][2];
1709                 /* Mixed density at Zlb */
1710                 final double b01 = densu(zh01, db01, tinf, tlb, H_MASS - xmm, alpha[6] - 1., PTM[5], s);
1711                 /* Mixed density at Alt */
1712                 final double dm01 = densu(alt, b01, tinf, tlb, xmm, 0., PTM[5], s);
1713                 final double zhm01 = zhm28;
1714                 /* Net density at Alt */
1715                 diffusiveDensity = dnet(diffusiveDensity, dm01, zhm01, xmm, H_MASS);
1716                 /* Correction to specified mixing ratio at ground */
1717                 final double rl = FastMath.log(b28 * PDM[5][1] * FastMath.sqrt(PDL[1][17] * PDL[1][17]) / b01);
1718                 final double hc01 = PDM[5][5] * PDL[1][11];
1719                 final double zc01 = PDM[5][4] * PDL[1][10];
1720                 diffusiveDensity *= ccor(alt, rl, hc01, zc01);
1721                 /* Chemistry correction */
1722                 final double hcc01 = PDM[5][7] * PDL[1][19];
1723                 final double zcc01 = PDM[5][6] * PDL[1][18];
1724                 final double rc01 = PDM[5][3] * PDL[1][20];
1725                 /* Net density corrected at Alt */
1726                 setDensity(HYDROGEN, diffusiveDensity * ccor(alt, rc01, hcc01, zcc01));
1727             }
1728 
1729             /**** N density ****/
1730             /* Density variation factor at Zlb */
1731             final double g14 = sw[21] * globe7(PD[7]);
1732             /* Diffusive density at Zlb */
1733             final double db14 = PDM[6][0] * FastMath.exp(g14) * PD[7][0];
1734             /* Diffusive density at Alt */
1735             diffusiveDensity = densu(alt, db14, tinf, tlb, N_MASS, alpha[7], PTM[5], s);
1736             setDensity(ATOMIC_NITROGEN, diffusiveDensity);
1737             if (sw[15] != 0 && alt <= altl[7]) {
1738                 /* Turbopause */
1739                 final double zh14 = PDM[6][2];
1740                 /* Mixed density at Zlb */
1741                 final double b14 = densu(zh14, db14, tinf, tlb, N_MASS - xmm, alpha[7] - 1., PTM[5], s);
1742                 /* Mixed density at Alt */
1743                 final double dm14 = densu(alt, b14, tinf, tlb, xmm, 0., PTM[5], s);
1744                 final double zhm14 = zhm28;
1745                 /* Net density at Alt */
1746                 diffusiveDensity = dnet(diffusiveDensity, dm14, zhm14, xmm, N_MASS);
1747                 /* Correction to specified mixing ratio at ground */
1748                 final double rl = FastMath.log(b28 * PDM[6][1] * PDL[0][2] / b14);
1749                 final double hc14 = PDM[6][5] * PDL[0][1];
1750                 final double zc14 = PDM[6][4] * PDL[0][0];
1751                 diffusiveDensity *= ccor(alt, rl, hc14, zc14);
1752                 /* Chemistry correction */
1753                 final double hcc14 = PDM[6][7] * PDL[0][4];
1754                 final double zcc14 = PDM[6][6] * PDL[0][3];
1755                 final double rc14 = PDM[6][3] * PDL[0][5];
1756                 /* Net density corrected at Alt */
1757                 setDensity(ATOMIC_NITROGEN, diffusiveDensity * ccor(alt, rc14, hcc14, zcc14));
1758             }
1759 
1760             /**** Anomalous O density ****/
1761             final double g16h  = sw[21] * globe7(PD[8]);
1762             final double db16h = PDM[7][0] * FastMath.exp(g16h) * PD[8][0];
1763             final double tho   = PDM[7][9] * PDL[0][6];
1764             diffusiveDensity = densu(alt, db16h, tho, tho, O_MASS, alpha[8], PTM[5], s);
1765             final double zsht = PDM[7][5];
1766             final double zmho = PDM[7][4];
1767             final double zsho = scalh(zmho, O_MASS, tho);
1768             diffusiveDensity *= FastMath.exp(-zsht / zsho * (FastMath.exp((zmho - alt ) / zsht) - 1.));
1769             setDensity(ANOMALOUS_OXYGEN, diffusiveDensity);
1770 
1771             // Convert densities from cm-3 to m-3
1772             for (int i = 0; i < 9; i++) {
1773                 setDensity(i, getDensity(i) * 1.0e+06);
1774             }
1775 
1776             /**** Total mass density ****/
1777             final double tmd = AMU * (HE_MASS * getDensity(HELIUM) +
1778                                       O_MASS  * getDensity(ATOMIC_OXYGEN) +
1779                                       N2_MASS * getDensity(MOLECULAR_NITROGEN) +
1780                                       O2_MASS * getDensity(MOLECULAR_OXYGEN) +
1781                                       AR_MASS * getDensity(ARGON) +
1782                                       H_MASS  * getDensity(HYDROGEN) +
1783                                       N_MASS  * getDensity(ATOMIC_NITROGEN));
1784             setDensity(TOTAL_MASS, tmd);
1785 
1786         }
1787 
1788         /** Calculate temperatures and densities not including anomalous oxygen.
1789          *  <p>NOTES ON INPUT VARIABLES:<br>
1790          *  Seconds, Local Time, and Longitude are used independently in the
1791          *  model and are not of equal importance for every situation.<br>
1792          *  For the most physically realistic calculation these three
1793          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1794          *  The Equation of Time departures from the above formula
1795          *  for apparent local time can be included if available but
1796          *  are of minor importance.<br><br>
1797          *
1798          *  f107 and f107A values used to generate the model correspond
1799          *  to the 10.7 cm radio flux at the actual distance of the Earth
1800          *  from the Sun rather than the radio flux at 1 AU. The following
1801          *  site provides both classes of values:<br>
1802          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
1803          *
1804          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1805          *  and these parameters should be set to 150., 150., and 4. respectively.
1806          *  </p>
1807          *  @param alt altitude (km)
1808          */
1809         void gtd7(final double alt) {
1810 
1811             // Calculates for thermosphere/mesosphere (above ZN2[0])
1812             final double altt = (alt > ZN2[0]) ? alt : ZN2[0];
1813             gts7(altt);
1814             if (alt >= ZN2[0]) {
1815                 return;
1816             }
1817 
1818             // Calculates for lower mesosphere/upper stratosphere (between ZN2[0] and ZN3[0]):
1819             // Temperature at nodes and gradients at end nodes
1820             // Inverse temperature a linear function of spherical harmonics
1821             final double r = PMA[2][0] * PAVGM[2];
1822             meso_tgn2[0] = meso_tgn1[1];
1823             meso_tn2[0]  = meso_tn1[4];
1824             meso_tn2[1]  = PMA[0][0] * PAVGM[0] / (1.0 - sw[20] * glob7s(PMA[0]));
1825             meso_tn2[2]  = PMA[1][0] * PAVGM[1] / (1.0 - sw[20] * glob7s(PMA[1]));
1826             meso_tn2[3]  = PMA[2][0] * PAVGM[2] / (1.0 - sw[20] * sw[22] * glob7s(PMA[2]));
1827             meso_tgn2[1] = PMA[9][0] * PAVGM[8] * (1.0 + sw[20] * sw[22] * glob7s(PMA[9])) *
1828                            meso_tn2[3] * meso_tn2[3] / (r * r);
1829             meso_tn3[0]  = meso_tn2[3];
1830 
1831             // Calculates for lower stratosphere and troposphere (below ZN3[0])
1832             // Temperature at nodes and gradients at end nodes
1833             // Inverse temperature a linear function of spherical harmonics
1834             if (alt <= ZN3[0]) {
1835                 final double q = PMA[6][0] * PAVGM[6];
1836                 meso_tgn3[0] = meso_tgn2[1];
1837                 meso_tn3[1]  = PMA[3][0] * PAVGM[3] / (1.0 - sw[22] * glob7s(PMA[3]));
1838                 meso_tn3[2]  = PMA[4][0] * PAVGM[4] / (1.0 - sw[22] * glob7s(PMA[4]));
1839                 meso_tn3[3]  = PMA[5][0] * PAVGM[5] / (1.0 - sw[22] * glob7s(PMA[5]));
1840                 meso_tn3[4]  = PMA[6][0] * PAVGM[6] / (1.0 - sw[22] * glob7s(PMA[6]));
1841                 meso_tgn3[1] = PMA[7][0] * PAVGM[7] * (1.0 + sw[22] * glob7s(PMA[7])) *
1842                                meso_tn3[4] * meso_tn3[4] / (q * q);
1843 
1844             }
1845 
1846             // Linear transition to full mixing below ZN2[0]
1847             final double dmc = (alt > ZMIX) ? 1.0 - (ZN2[0] - alt) / (ZN2[0] - ZMIX) : 0.;
1848             final double dz28 = getDensity(MOLECULAR_NITROGEN);
1849 
1850             // N2 density
1851             final double dm28m = dm28 * 1.0e+06;
1852             double dmr = dz28 / dm28m - 1.0;
1853             double dst = densm(alt, dm28m, PDM[2][4]) * (1.0 + dmr * dmc);
1854             setDensity(MOLECULAR_NITROGEN, dst);
1855 
1856             // HE density
1857             dmr = getDensity(HELIUM) / (dz28 * PDM[0][1]) - 1.0;
1858             dst = getDensity(MOLECULAR_NITROGEN) * PDM[0][1] * (1.0 + dmr * dmc);
1859             setDensity(HELIUM, dst);
1860 
1861             // O density
1862             setDensity(ATOMIC_OXYGEN, 0.);
1863             setDensity(ANOMALOUS_OXYGEN, 0.);
1864 
1865             // O2 density
1866             dmr = getDensity(MOLECULAR_OXYGEN) / (dz28 * PDM[3][1]) - 1.0;
1867             dst = getDensity(MOLECULAR_NITROGEN) * PDM[3][1] * (1.0 + dmr * dmc);
1868             setDensity(MOLECULAR_OXYGEN, dst);
1869 
1870             // AR density
1871             dmr = getDensity(ARGON) / (dz28 * PDM[4][1]) - 1.0;
1872             dst = getDensity(MOLECULAR_NITROGEN) * PDM[4][1] * (1.0 + dmr * dmc);
1873             setDensity(ARGON, dst);
1874 
1875             // H density
1876             setDensity(HYDROGEN, 0.);
1877 
1878             // N density
1879             setDensity(ATOMIC_NITROGEN, 0.);
1880 
1881             // Total mass density
1882             final double tmd = AMU * (HE_MASS * getDensity(HELIUM) +
1883                                       O_MASS  * getDensity(ATOMIC_OXYGEN) +
1884                                       N2_MASS * getDensity(MOLECULAR_NITROGEN) +
1885                                       O2_MASS * getDensity(MOLECULAR_OXYGEN) +
1886                                       AR_MASS * getDensity(ARGON) +
1887                                       H_MASS  * getDensity(HYDROGEN) +
1888                                       N_MASS  * getDensity(ATOMIC_NITROGEN));
1889             setDensity(TOTAL_MASS, tmd);
1890 
1891             // Temperature at altitude
1892             setTemperature(ALTITUDE, densm(alt, 1.0, 0));
1893 
1894         }
1895 
1896         /** Calculate temperatures and densities including anomalous oxygen.
1897          *  <p></p>
1898          *  <p>NOTES ON INPUT VARIABLES:<br>
1899          *  Seconds, Local Time, and Longitude are used independently in the
1900          *  model and are not of equal importance for every situation.<br>
1901          *  For the most physically realistic calculation these three
1902          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
1903          *  The Equation of Time departures from the above formula
1904          *  for apparent local time can be included if available but
1905          *  are of minor importance.<br>
1906          *  <br>
1907          *  f107 and f107A values used to generate the model correspond
1908          *  to the 10.7 cm radio flux at the actual distance of the Earth
1909          *  from the Sun rather than the radio flux at 1 AU. The following
1910          *  site provides both classes of values:<br>
1911          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br>
1912          *  <br>
1913          *  f107, f107A, and ap effects are neither large nor well established below 80 km
1914          *  and these parameters should be set to 150., 150., and 4. respectively.
1915          *  </p>
1916          *  @param alt altitude (km)
1917          */
1918         void gtd7d(final double alt) {
1919 
1920             // Compute densities and temperatures
1921             gtd7(alt);
1922 
1923             // Update the total mass density with anomalous oxygen contribution
1924             final double dTot = getDensity(TOTAL_MASS) + AMU * O_MASS * getDensity(ANOMALOUS_OXYGEN);
1925             setDensity(TOTAL_MASS, dTot);
1926 
1927         }
1928 
1929         /** Set one density.
1930          * @param index one of the nine elements :
1931          * <ul>
1932          * <li>{@link #HELIUM}</li>
1933          * <li>{@link #ATOMIC_OXYGEN}</li>
1934          * <li>{@link #MOLECULAR_NITROGEN}</li>
1935          * <li>{@link #MOLECULAR_OXYGEN}</li>
1936          * <li>{@link #ARGON}</li>
1937          * <li>{@link #TOTAL_MASS}</li>
1938          * <li>{@link #HYDROGEN}</li>
1939          * <li>{@link #ATOMIC_NITROGEN}</li>
1940          * <li>{@link #ATOMIC_NITROGEN}</li>
1941          * </ul>
1942          * @param d the value of density to set
1943          */
1944         void setDensity(final int index, final double d) {
1945             densities[index] = d;
1946         }
1947 
1948         /** Set one temperature.
1949          * @param index one of the two elements :
1950          * <ul>
1951          * <li>{@link #EXOSPHERIC}</li>
1952          * <li>{@link #ALTITUDE}</li>
1953          * </ul>
1954          * @param t the value of temperature to set
1955          */
1956         void setTemperature(final int index, final double t) {
1957             temperatures[index] = t;
1958         }
1959 
1960         /** Get one of the stored densities.
1961          * @param index one of the nine elements :
1962          * <ul>
1963          * <li>{@link #HELIUM}</li>
1964          * <li>{@link #ATOMIC_OXYGEN}</li>
1965          * <li>{@link #MOLECULAR_NITROGEN}</li>
1966          * <li>{@link #MOLECULAR_OXYGEN}</li>
1967          * <li>{@link #ARGON}</li>
1968          * <li>{@link #TOTAL_MASS}</li>
1969          * <li>{@link #HYDROGEN}</li>
1970          * <li>{@link #ATOMIC_NITROGEN}</li>
1971          * <li>{@link #ATOMIC_NITROGEN}</li>
1972          * </ul>
1973          * @return the requested density
1974          */
1975         public double getDensity(final int index) {
1976             return densities[index];
1977         }
1978 
1979         /** Calculate G(L) function with upper thermosphere parameters.
1980          *  @param p array of parameters
1981          *  @return G(L) value
1982          */
1983         private double globe7(final double[] p) {
1984 
1985             final double[] t = new double[14];
1986             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
1987             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
1988             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
1989             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
1990 
1991             // F10.7 effect
1992             final double df  = f107  - f107a;
1993             final double dfa = f107a - FLUX_REF;
1994             t[0] = p[19] * df * (1.0 + p[59] * dfa) + p[20] * df * df + p[21] * dfa + p[29] * dfa * dfa;
1995 
1996             final double f1 = 1.0 + (p[47] * dfa + p[19] * df + p[20] * df * df) * swc[1];
1997             final double f2 = 1.0 + (p[49] * dfa + p[19] * df + p[20] * df * df) * swc[1];
1998 
1999             // Time independent
2000             t[1] = (p[1]  * plg[0][2] + p[2] * plg[0][4] + p[22] * plg[0][6]) +
2001                    (p[14] * plg[0][2]) * dfa * swc[1] + p[26] * plg[0][1];
2002 
2003             // Symmetrical annual
2004             t[2] = p[18] * cd32;
2005 
2006             // Symmetrical semiannual
2007             t[3] = (p[15] + p[16] * plg[0][2]) * cd18;
2008 
2009             // Asymmetrical annual
2010             t[4] = f1 * (p[9] * plg[0][1] + p[10] * plg[0][3]) * cd14;
2011 
2012             // Asymmetrical semiannual
2013             t[5] = p[37] * plg[0][1] * cd39;
2014 
2015             // Diurnal
2016             if (sw[7] != 0) {
2017                 final double t71 = (p[11] * plg[1][2]) * cd14 * swc[5];
2018                 final double t72 = (p[12] * plg[1][2]) * cd14 * swc[5];
2019                 t[6] = f2 * ((p[3] * plg[1][1] + p[4] * plg[1][3] + p[27] * plg[1][5] + t71) * ctloc +
2020                              (p[6] * plg[1][1] + p[7] * plg[1][3] + p[28] * plg[1][5] + t72) * stloc);
2021             }
2022 
2023             // Semidiurnal
2024             if (sw[8] != 0) {
2025                 final double t81 = (p[23] * plg[2][3] + p[35] * plg[2][5]) * cd14 * swc[5];
2026                 final double t82 = (p[33] * plg[2][3] + p[36] * plg[2][5]) * cd14 * swc[5];
2027                 t[7] = f2 * ((p[5] * plg[2][2] + p[41] * plg[2][4] + t81) * c2tloc +
2028                              (p[8] * plg[2][2] + p[42] * plg[2][4] + t82) * s2tloc);
2029             }
2030 
2031             // Terdiurnal
2032             if (sw[14] != 0) {
2033                 t[13] = f2 * ((p[39] * plg[3][3] + (p[93] * plg[3][4] + p[46] * plg[3][6]) * cd14 * swc[5]) * s3tloc +
2034                               (p[40] * plg[3][3] + (p[94] * plg[3][4] + p[48] * plg[3][6]) * cd14 * swc[5]) * c3tloc);
2035             }
2036 
2037             // magnetic activity based on daily ap
2038             if (sw[9] == -1) {
2039                 if (p[51] != 0) {
2040                     final double exp1 = FastMath.exp(-10800.0 * FastMath.abs(p[51]) /
2041                                                      (1.0 + p[138] * (LAT_REF - FastMath.abs(lat))));
2042                     final double p24 = FastMath.max(p[24], 1.0e-4);
2043                     apt = sg0(FastMath.min(exp1, 0.99999), p24, p[25]);
2044                     t[8] = apt * (p[50] + p[96] * plg[0][2] + p[54] * plg[0][4] +
2045                                   (p[125] * plg[0][1] + p[126] * plg[0][3] + p[127] * plg[0][5]) * cd14 * swc[5] +
2046                                   (p[128] * plg[1][1] + p[129] * plg[1][3] + p[130] * plg[1][5]) * swc[7] *
2047                                   FastMath.cos(HOUR_TO_RAD * (hl - p[131])));
2048                 }
2049             } else {
2050                 final double apd = ap[0] - 4.0;
2051                 final double p44 = (p[43] < 0.) ? 1.0E-5 : p[43];
2052                 final double p45 = p[44];
2053                 apdf = apd + (p45 - 1.0) * (apd + (FastMath.exp(-p44 * apd) - 1.0) / p44);
2054                 if (sw[9] != 0) {
2055                     t[8] = apdf * (p[32] + p[45] * plg[0][2] + p[34] * plg[0][4] +
2056                                    (p[100] * plg[0][1] + p[101] * plg[0][3] + p[102] * plg[0][5]) * cd14 * swc[5] +
2057                                    (p[121] * plg[1][1] + p[122] * plg[1][3] + p[123] * plg[1][5]) * swc[7] *
2058                                    FastMath.cos(HOUR_TO_RAD * (hl - p[124])));
2059                 }
2060             }
2061 
2062             if (sw[10] != 0) {
2063                 final double lonr   = DEG_TO_RAD * lon;
2064                 final SinCos scLonr = FastMath.sinCos(lonr);
2065                 // Longitudinal
2066                 if (sw[11] != 0) {
2067                     t[10] = (1.0 + p[80] * dfa * swc[1]) *
2068                             ((p[64]  * plg[1][2] + p[65]  * plg[1][4] + p[66]  * plg[1][6] +
2069                               p[103] * plg[1][1] + p[104] * plg[1][3] + p[105] * plg[1][5] +
2070                              (p[109] * plg[1][1] + p[110] * plg[1][3] + p[111] * plg[1][5]) * swc[5] * cd14) *
2071                              scLonr.cos() +
2072                              (p[90]  * plg[1][2] + p[91]  * plg[1][4] + p[92]  * plg[1][6] +
2073                               p[106] * plg[1][1] + p[107] * plg[1][3] + p[108] * plg[1][5] +
2074                              (p[112] * plg[1][1] + p[113] * plg[1][3] + p[114] * plg[1][5]) * swc[5] * cd14) *
2075                              scLonr.sin());
2076                 }
2077 
2078                 // ut and mixed ut, longitude
2079                 if (sw[12] != 0) {
2080                     t[11] = (1.0 + p[95]  * plg[0][1]) * (1.0 + p[81] * dfa * swc[1]) *
2081                             (1.0 + p[119] * plg[0][1] * swc[5] * cd14) *
2082                             (p[68] * plg[0][1] + p[69] * plg[0][3] + p[70] * plg[0][5]) *
2083                             FastMath.cos(SEC_TO_RAD * (sec - p[71]));
2084                     t[11] += swc[11] * (1.0 + p[137] * dfa * swc[1]) *
2085                             (p[76] * plg[2][3] + p[77] * plg[2][5] + p[78] * plg[2][7]) *
2086                             FastMath.cos(SEC_TO_RAD * (sec - p[79]) + 2.0 * lonr);
2087                 }
2088 
2089                 /* ut, longitude magnetic activity */
2090                 if (sw[13] != 0) {
2091                     if (sw[9] == -1) {
2092                         if (p[51] != 0.) {
2093                             t[12] = apt * swc[11] * (1. + p[132] * plg[0][1]) *
2094                                     (p[52] * plg[1][2] + p[98] * plg[1][4] + p[67] * plg[1][6]) *
2095                                     FastMath.cos(DEG_TO_RAD * (lon - p[97])) +
2096                                     apt * swc[11] * swc[5] * cd14 *
2097                                     (p[133] * plg[1][1] + p[134] * plg[1][3] + p[135] * plg[1][5]) *
2098                                     FastMath.cos(DEG_TO_RAD * (lon - p[136])) +
2099                                     apt * swc[12] *
2100                                     (p[55] * plg[0][1] + p[56] * plg[0][3] + p[57] * plg[0][5]) *
2101                                     FastMath.cos(SEC_TO_RAD * (sec - p[58]));
2102                         }
2103                     } else {
2104                         t[12] = apdf * swc[11] * (1.0 + p[120] * plg[0][1]) *
2105                                 ((p[60] * plg[1][2] + p[61] * plg[1][4] + p[62] * plg[1][6]) *
2106                                 FastMath.cos(DEG_TO_RAD * (lon - p[63]))) +
2107                                 apdf * swc[11] * swc[5] * cd14 *
2108                                 (p[115] * plg[1][1] + p[116] * plg[1][3] + p[117] * plg[1][5]) *
2109                                 FastMath.cos(DEG_TO_RAD * (lon - p[118])) +
2110                                 apdf * swc[12] *
2111                                 (p[83] * plg[0][1] + p[84] * plg[0][3] + p[85] * plg[0][5]) *
2112                                 FastMath.cos(SEC_TO_RAD * (sec - p[75]));
2113                     }
2114                 }
2115             }
2116 
2117             // Sum all effects (params not used: 82, 89, 99, 139-149)
2118             double tinf = p[30];
2119             for (int i = 0; i < 14; i++) {
2120                 tinf += FastMath.abs(sw[i + 1]) * t[i];
2121             }
2122 
2123             // Return G(L)
2124             return tinf;
2125 
2126         }
2127 
2128         /** Calculate G(L) function with lower atmosphere parameters.
2129          *  @param p array of parameters
2130          *  @return G(L) value
2131          */
2132         private double glob7s(final double[] p) {
2133 
2134             final double[] t = new double[14];
2135             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
2136             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
2137             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
2138             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
2139 
2140             // F10.7 effect
2141             t[0] = p[21] * (f107a - FLUX_REF);
2142 
2143             // Time independent
2144             t[1] = p[1]  * plg[0][2] + p[2]  * plg[0][4] + p[22] * plg[0][6] +
2145                    p[26] * plg[0][1] + p[14] * plg[0][3] + p[59] * plg[0][5];
2146 
2147             // Symmetrical annual
2148             t[2] = (p[18] + p[47] * plg[0][2] + p[29] * plg[0][4]) * cd32;
2149 
2150             // Symmetrical semiannual
2151             t[3] = (p[15] + p[16] * plg[0][2] + p[30] * plg[0][4]) * cd18;
2152 
2153             // Asymmetrical annual
2154             t[4] = (p[9] * plg[0][1] + p[10] * plg[0][3] + p[20] * plg[0][5]) * cd14;
2155 
2156             // Asymmetrical semiannual
2157             t[5] = (p[37] * plg[0][1]) * cd39;
2158 
2159             // Diurnal
2160             if (sw[7] != 0) {
2161                 final double t71 = p[11] * plg[1][2] * cd14 * swc[5];
2162                 final double t72 = p[12] * plg[1][2] * cd14 * swc[5];
2163                 t[6] = (p[3] * plg[1][1] + p[4] * plg[1][3] + t71) * ctloc +
2164                        (p[6] * plg[1][1] + p[7] * plg[1][3] + t72) * stloc;
2165             }
2166 
2167             // Semidiurnal
2168             if (sw[8] != 0) {
2169                 final double t81 = (p[23] * plg[2][3] + p[35] * plg[2][5]) * cd14 * swc[5];
2170                 final double t82 = (p[33] * plg[2][3] + p[36] * plg[2][5]) * cd14 * swc[5];
2171                 t[7] = (p[5] * plg[2][2] + p[41] * plg[2][4] + t81) * c2tloc +
2172                        (p[8] * plg[2][2] + p[42] * plg[2][4] + t82) * s2tloc;
2173             }
2174 
2175             // Terdiurnal
2176             if (sw[14] != 0) {
2177                 t[13] = p[39] * plg[3][3] * s3tloc + p[40] * plg[3][3] * c3tloc;
2178             }
2179 
2180             // Magnetic activity
2181             if (sw[9] == 1) {
2182                 t[8] = apdf * (p[32] + p[45] * plg[0][2] * swc[2]);
2183             } else if (sw[9] == -1) {
2184                 t[8] = apt  * (p[50] + p[96] * plg[0][2] * swc[2]);
2185             }
2186 
2187             // Longitudinal
2188             if (!(sw[10] == 0 || sw[11] == 0)) {
2189                 final double lonr   = DEG_TO_RAD * lon;
2190                 final SinCos scLonr = FastMath.sinCos(lonr);
2191                 t[10] = (1.0 + plg[0][1] * (p[80] * swc[5] * FastMath.cos(DAY_TO_RAD * (doy - p[81])) +
2192                                             p[85] * swc[6] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[86]))) +
2193                                p[83] * swc[3] * FastMath.cos(DAY_TO_RAD * (doy - p[84])) +
2194                                p[87] * swc[4] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[88]))) *
2195                         ((p[64] * plg[1][2] + p[65] * plg[1][4] + p[66] * plg[1][6] +
2196                           p[74] * plg[1][1] + p[75] * plg[1][3] + p[76] * plg[1][5]) * scLonr.cos() +
2197                          (p[90] * plg[1][2] + p[91] * plg[1][4] + p[92] * plg[1][6] +
2198                           p[77] * plg[1][1] + p[78] * plg[1][3] + p[79] * plg[1][5]) * scLonr.sin());
2199             }
2200 
2201             // Sum all effects
2202             double gl = 0;
2203             for (int i = 0; i < 14; i++) {
2204                 gl += FastMath.abs(sw[i + 1]) * t[i];
2205             }
2206 
2207             // Return G(L)
2208             return gl;
2209         }
2210 
2211         /** Implements sg0 function (Eq. A24a).
2212          * @param ex ex
2213          * @param p24 abs(p[24])
2214          * @param p25 p[25]
2215          * @return sg0
2216          */
2217         private double sg0(final double ex, final double p24, final double p25) {
2218             final double g01 = g0(ap[1], p24, p25);
2219             final double g02 = g0(ap[2], p24, p25);
2220             final double g03 = g0(ap[3], p24, p25);
2221             final double g04 = g0(ap[4], p24, p25);
2222             final double g05 = g0(ap[5], p24, p25);
2223             final double g06 = g0(ap[6], p24, p25);
2224             final double ex2 = ex * ex;
2225             final double ex3 = ex * ex2;
2226             final double ex4 = ex2 * ex2;
2227             final double ex8 = ex4 * ex4;
2228             final double ex12 = ex4 * ex8;
2229             final double g234 = g02 * ex + g03 * ex2 + g04 * ex3;
2230             final double g56  = g05 * ex4 + g06 * ex12;
2231             final double ex19 = ex3 * ex4 * ex12;
2232             final double omex = 1.0 - ex;
2233             final double sumex = 1.0 + (1.0 - ex19) / omex * FastMath.sqrt(ex);
2234             return (g01 + (g234 + g56 * (1.0 - ex8) / omex)) / sumex;
2235         }
2236 
2237         /** Implements go function (Eq. A24d).
2238          * @param apI 3 hrs ap
2239          * @param p24 abs(p[24])
2240          * @param p25 p[25]
2241          * @return go
2242          */
2243         private double g0(final double apI, final double p24, final double p25) {
2244             final double am4 = apI - 4.0;
2245             return am4 + (p25 - 1.0) * (am4 + (FastMath.exp(-p24 * am4) - 1.0) / p24);
2246         }
2247 
2248         /** Calculates chemistry/dissociation correction for MSIS models.
2249          * @param alt altitude
2250          * @param r target ratio
2251          * @param h1 transition scale length
2252          * @param zh altitude of 1/2 R
2253          * @return correction
2254          */
2255         private double ccor(final double alt, final double r, final double h1, final double zh) {
2256             final double e = (alt - zh) / h1;
2257             if (e > 70.) {
2258                 return 1.;
2259             } else if (e < -70.) {
2260                 return FastMath.exp(r);
2261             } else {
2262                 return FastMath.exp(r / (1.0 + FastMath.exp(e)));
2263             }
2264         }
2265 
2266 
2267         /** Calculates O & O2 chemistry/dissociation correction for MSIS models.
2268          * @param alt altitude
2269          * @param r target ratio
2270          * @param h1 transition scale length
2271          * @param zh altitude of 1/2 R
2272          * @param h2 transition scale length
2273          * @return correction
2274          */
2275         private double ccor2(final double alt, final double r,
2276                              final double h1, final double zh, final double h2) {
2277             final double e1 = (alt - zh) / h1;
2278             final double e2 = (alt - zh) / h2;
2279             if (e1 > 70. || e2 > 70.) {
2280                 return 1.;
2281             } else if (e1 < -70. && e2 < -70.) {
2282                 return FastMath.exp(r);
2283             } else {
2284                 final double ex1 = FastMath.exp(e1);
2285                 final double ex2 = FastMath.exp(e2);
2286                 return FastMath.exp(r / (1.0 + 0.5 * (ex1 + ex2)));
2287             }
2288         }
2289 
2290         /** Calculates scale height.
2291          * @param alt altitude
2292          * @param xm species molecular weight
2293          * @param temp temperature
2294          * @return scale height (km)
2295          */
2296         private double scalh(final double alt, final double xm, final double temp) {
2297             // Gravity at altitude
2298             final double denom = 1.0 + alt / rlat;
2299             final double galt = glat / (denom * denom);
2300             return R_GAS * temp / (galt * xm);
2301         }
2302 
2303         /** Calculates turbopause correction for MSIS models.
2304          * @param dd diffusive density
2305          * @param dm full mixed density
2306          * @param zhm transition scale length
2307          * @param xmm full mixed molecular weight
2308          * @param xm species molecular weight
2309          * @return combined density
2310          */
2311         private double dnet(final double dd, final double dm,
2312                             final double zhm, final double xmm, final double xm) {
2313             if (!(dm > 0 && dd > 0)) {
2314                 double ddd = dd;
2315                 if (dd == 0 && dm == 0) {
2316                     ddd = 1;
2317                 }
2318                 if (dm == 0) {
2319                     return ddd;
2320                 }
2321                 if (dd == 0) {
2322                     return dm;
2323                 }
2324             }
2325 
2326             final double a  = zhm / (xmm - xm);
2327             final double ylog = a * FastMath.log(dm / dd);
2328             if (ylog < -10.) {
2329                 return dd;
2330             } else if (ylog > 10.) {
2331                 return dm;
2332             } else {
2333                 return dd * FastMath.pow(1.0 + FastMath.exp(ylog), 1.0 / a);
2334             }
2335         }
2336 
2337         /** Integrate cubic spline function from xa[0] to x.
2338          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2339          * @param xa array of abscissas in ascending order
2340          * @param ya array of ordinates in ascending order by xa
2341          * @param y2a array of second derivatives in ascending order by xa
2342          * @param x abscissa end point
2343          * @return integral value
2344          */
2345         private double splini(final double[] xa, final double[] ya, final double[] y2a, final double x) {
2346             final int n = xa.length;
2347             double yi = 0;
2348             int klo = 0;
2349             int khi = 1;
2350             while (x > xa[klo] && khi < n) {
2351                 double xx = x;
2352                 if (khi < n - 1) {
2353                     xx = (x < xa[khi]) ? x : xa[khi];
2354                 }
2355                 final double h = xa[khi] - xa[klo];
2356                 final double a = (xa[khi] - xx) / h;
2357                 final double b = (xx - xa[klo]) / h;
2358                 final double a2 = a * a;
2359                 final double b2 = b * b;
2360                 yi += ((1.0 - a2) * ya[klo] / 2.0 + b2 * ya[khi] / 2.0 +
2361                        ((-(1.0 + a2 * a2) / 4.0 + a2 / 2.0) * y2a[klo] +
2362                           (b2 * b2 / 4.0 - b2 / 2.0) * y2a[khi]) * h * h / 6.0) * h;
2363                 klo++;
2364                 khi++;
2365             }
2366             return yi;
2367         }
2368 
2369         /** Calculate cubic spline interpolated value.
2370          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2371          * @param xa array of abscissas in ascending order
2372          * @param ya array of ordinates in ascending order by xa
2373          * @param y2a array of second derivatives in ascending order by xa
2374          * @param x abscissa for interpolation
2375          * @return interpolated value
2376          */
2377         private double splint(final double[] xa, final double[] ya, final double[] y2a, final double x) {
2378             final int n = xa.length;
2379             int klo = 0;
2380             int khi = n - 1;
2381             while (khi - klo > 1) {
2382                 final int k = (khi + klo) >>> 1;
2383                 if (xa[k] > x) {
2384                     khi = k;
2385                 } else {
2386                     klo = k;
2387                 }
2388             }
2389             final double h = xa[khi] - xa[klo];
2390             final double a = (xa[khi] - x) / h;
2391             final double b = (x - xa[klo]) / h;
2392             return a * ya[klo] + b * ya[khi] +
2393                     ((a * a * a - a) * y2a[klo] + (b * b * b - b) * y2a[khi]) * h * h / 6.0;
2394         }
2395 
2396         /** Calculate 2nd derivatives of cubic spline interpolation function.
2397          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
2398          * @param x array of abscissas in ascending order
2399          * @param y array of ordinates in ascending order by x
2400          * @param yp1 derivative at x[0] (2nd derivatives null if > 1E30)
2401          * @param ypn derivative at x[n-1] (2nd derivatives null if > 1E30)
2402          * @return array of second derivatives
2403          */
2404         private double[] spline(final double[] x, final double[] y, final double yp1, final double ypn) {
2405             final int n = x.length;
2406             final double[] y2 = new double[n];
2407             final double[] u  = new double[n];
2408 
2409             if (yp1 < 1e+30) {
2410                 y2[0] = -0.5;
2411                 u[0]  = (3.0 / (x[1] - x[0])) * ((y[1] - y[0]) / (x[1] - x[0]) - yp1);
2412             }
2413             for (int i = 1; i < n - 1; i++) {
2414                 final double sig = (x[i] - x[i - 1]) / (x[i + 1] - x[i - 1]);
2415                 final double p = sig * y2[i - 1] + 2.0;
2416                 y2[i] = (sig - 1.0) / p;
2417                 u[i] = (6.0 * ((y[i + 1] - y[i]) / (x[i + 1] - x[i]) - (y[i] - y[i - 1]) / (x[i] - x[i - 1])) /
2418                         (x[i + 1] - x[i - 1]) - sig * u[i - 1]) / p;
2419             }
2420 
2421             double qn = 0;
2422             double un = 0;
2423             if (ypn < 1e+30) {
2424                 qn = 0.5;
2425                 un = (3.0 / (x[n - 1] - x[n - 2])) * (ypn - (y[n - 1] - y[n - 2]) / (x[n - 1] - x[n - 2]));
2426             }
2427 
2428             y2[n - 1] = (un - qn * u[n - 2]) / (qn * y2[n - 2] + 1.0);
2429             for (int k = n - 2; k >= 0; k--) {
2430                 y2[k] = y2[k] * y2[k + 1] + u[k];
2431             }
2432 
2433             return y2;
2434         }
2435 
2436         /** Calculate Temperature and Density Profiles for lower atmosphere.
2437          * @param alt altitude
2438          * @param d0 density
2439          * @param xm mixed density
2440          * @return temperature or density profile
2441          */
2442         private double densm(final double alt, final double d0, final double xm) {
2443 
2444             double densm = d0;
2445 
2446             // stratosphere/mesosphere temperature
2447             int mn = ZN2.length;
2448             double z = (alt > ZN2[mn - 1]) ? alt : ZN2[mn - 1];
2449 
2450             double z1 = ZN2[0];
2451             double z2 = ZN2[mn - 1];
2452             double t1 = meso_tn2[0];
2453             double t2 = meso_tn2[mn - 1];
2454             double zg  = zeta(z, z1);
2455             double zgdif = zeta(z2, z1);
2456 
2457             /* set up spline nodes */
2458             double[] xs = new double[mn];
2459             double[] ys = new double[mn];
2460             for (int k = 0; k < mn; k++) {
2461                 xs[k] = zeta(ZN2[k], z1) / zgdif;
2462                 ys[k] = 1.0 / meso_tn2[k];
2463             }
2464             final double qSM = (rlat + z2) / (rlat + z1);
2465             double yd1 = -meso_tgn2[0] / (t1 * t1) * zgdif;
2466             double yd2 = -meso_tgn2[1] / (t2 * t2) * zgdif * qSM * qSM;
2467 
2468             /* calculate spline coefficients */
2469             double[] y2out = spline(xs, ys, yd1, yd2);
2470             double x = zg / zgdif;
2471             double y = splint(xs, ys, y2out, x);
2472 
2473             /* temperature at altitude */
2474             double tz = 1.0 / y;
2475 
2476             if (xm != 0.0) {
2477                 /* calculate stratosphere / mesospehere density */
2478                 final double glb  = galt(z1);
2479                 final double gamm = xm * glb * zgdif / R_GAS;
2480 
2481                 /* Integrate temperature profile */
2482                 final double yi = splini(xs, ys, y2out, x);
2483                 final double expl = FastMath.min(MIN_TEMP, gamm * yi);
2484 
2485                 /* Density at altitude */
2486                 densm *= (t1 / tz) * FastMath.exp(-expl);
2487             }
2488 
2489             if (alt > ZN3[0]) {
2490                 return (xm == 0.0) ? tz : densm;
2491             }
2492 
2493             // troposhere/stratosphere temperature
2494             z = alt;
2495             mn = ZN3.length;
2496             z1 = ZN3[0];
2497             z2 = ZN3[mn - 1];
2498             t1 = meso_tn3[0];
2499             t2 = meso_tn3[mn - 1];
2500             zg = zeta(z, z1);
2501             zgdif = zeta(z2, z1);
2502 
2503             /* set up spline nodes */
2504             xs = new double[mn];
2505             ys = new double[mn];
2506             for (int k = 0; k < mn; k++) {
2507                 xs[k] = zeta(ZN3[k], z1) / zgdif;
2508                 ys[k] = 1.0 / meso_tn3[k];
2509             }
2510             final double qTS = (rlat + z2) / (rlat + z1);
2511             yd1 = -meso_tgn3[0] / (t1 * t1) * zgdif;
2512             yd2 = -meso_tgn3[1] / (t2 * t2) * zgdif * qTS * qTS;
2513 
2514             /* calculate spline coefficients */
2515             y2out = spline(xs, ys, yd1, yd2);
2516             x = zg / zgdif;
2517             y = splint(xs, ys, y2out, x);
2518 
2519             /* temperature at altitude */
2520             tz = 1.0 / y;
2521 
2522             if (xm != 0.0) {
2523                 /* calculate tropospheric / stratosphere density */
2524                 final double glb = galt(z1);
2525                 final double gamm = xm * glb * zgdif / R_GAS;
2526 
2527                 /* Integrate temperature profile */
2528                 final double yi = splini(xs, ys, y2out, x);
2529                 final double expl = FastMath.min(MIN_TEMP, gamm * yi);
2530 
2531                 /* Density at altitude */
2532                 densm *= (t1 / tz) * FastMath.exp(-expl);
2533             }
2534 
2535             return (xm == 0.0) ? tz : densm;
2536         }
2537 
2538         /** Calculate temperature and density profiles according to new lower thermo polynomial.
2539          * @param alt altitude
2540          * @param dlb density at lower boundary
2541          * @param tinf exospheric temperature
2542          * @param tlb temperature at lower boundary
2543          * @param xm species molecular weight
2544          * @param alpha thermal diffusion coefficient
2545          * @param zlb altitude of the lower boundary
2546          * @param s2 slope
2547          * @return temperature or density profile
2548          */
2549         private double densu(final double alt, final double dlb, final double tinf,
2550                              final double tlb, final double xm, final double alpha,
2551                              final double zlb, final double s2) {
2552             /* joining altitudes of Bates and spline */
2553             double z = (alt > ZN1[0]) ? alt : ZN1[0];
2554 
2555             /* geopotential altitude difference from ZLB */
2556             final double zg2 = zeta(z, zlb);
2557 
2558             /* Bates temperature */
2559             final double tt = tinf - (tinf - tlb) * FastMath.exp(-s2 * zg2);
2560             final double ta = tt;
2561             double tz = tt;
2562 
2563             final int mn = ZN1.length;
2564             final double[] xs = new double[mn];
2565             final double[] ys = new double[mn];
2566             double x = 0.;
2567             double[] y2out =  new double[mn];
2568             double zgdif = 0.;
2569             if (alt < ZN1[0]) {
2570                 /* calculate temperature below ZA
2571                  * temperature gradient at ZA from Bates profile */
2572                 final double p = (rlat + zlb) / (rlat + ZN1[0]);
2573                 final double dta = (tinf - ta) * s2 * p * p;
2574                 meso_tgn1[0] = dta;
2575                 meso_tn1[0] = ta;
2576                 z = (alt > ZN1[mn - 1]) ? alt : ZN1[mn - 1];
2577 
2578                 final double t1 = meso_tn1[0];
2579                 final double t2 = meso_tn1[mn - 1];
2580                 /* geopotental difference from z1 */
2581                 final double zg = zeta(z, ZN1[0]);
2582                 zgdif = zeta(ZN1[mn - 1], ZN1[0]);
2583                 /* set up spline nodes */
2584                 for (int k = 0; k < mn; k++) {
2585                     xs[k] = zeta(ZN1[k], ZN1[0]) / zgdif;
2586                     ys[k] = 1.0 / meso_tn1[k];
2587                 }
2588                 /* end node derivatives */
2589                 final double q   = (rlat + ZN1[mn - 1]) / (rlat + ZN1[0]);
2590                 final double yd1 = -meso_tgn1[0] / (t1 * t1) * zgdif;
2591                 final double yd2 = -meso_tgn1[1] / (t2 * t2) * zgdif * q * q;
2592                 /* calculate spline coefficients */
2593                 y2out = spline(xs, ys, yd1, yd2);
2594                 x = zg / zgdif;
2595                 final double y = splint(xs, ys, y2out, x);
2596                 /* temperature at altitude */
2597                 tz = 1.0 / y;
2598             }
2599 
2600             if (xm == 0) {
2601                 return tz;
2602             }
2603 
2604             /* calculate density above za */
2605             double glb   = galt(zlb);
2606             double gamma = xm * glb / (R_GAS * s2 * tinf);
2607             double expl  = (tt <= 0) ? MIN_TEMP : FastMath.min(MIN_TEMP, FastMath.exp(-s2 * gamma * zg2));
2608             double densu = dlb * expl * FastMath.pow(tlb / tt, 1.0 + alpha + gamma);
2609 
2610             // Correction for issue 1365 - protection against "densu" being infinite
2611             if (!Double.isFinite(densu)) {
2612                 if (expl < MIN_TEMP) {
2613                     densu = dlb * FastMath.exp(FastMath.log(tlb / tt) * (1.0 + alpha + gamma) - s2 * gamma * zg2);
2614                 } else {
2615                     throw new OrekitException( OrekitMessages.INFINITE_NRLMSISE00_DENSITY);
2616                 }
2617             }
2618 
2619             /* calculate density below za */
2620             if (alt < ZN1[0]) {
2621                 glb   = galt(ZN1[0]);
2622                 gamma = xm * glb * zgdif / R_GAS;
2623                 /* integrate spline temperatures */
2624                 expl  = (tz <= 0) ? MIN_TEMP : FastMath.min(MIN_TEMP, gamma * splini(xs, ys, y2out, x));
2625                 /* correct density at altitude */
2626                 densu *= FastMath.pow(meso_tn1[0] / tz, 1.0 + alpha) * FastMath.exp(-expl);
2627             }
2628 
2629             /* Return density at altitude */
2630             return densu;
2631         }
2632 
2633         /** Calculate gravity at altitude.
2634          * @param alt altitude (km)
2635          * @return gravity at altitude (cm/s2)
2636          */
2637         private double galt(final double alt) {
2638             final double r = 1.0 + alt / rlat;
2639             return glat / (r * r);
2640         }
2641 
2642         /** Calculate zeta function.
2643          * @param zz zz value
2644          * @param zl zl value
2645          * @return value of zeta function
2646          */
2647         private double zeta(final double zz, final double zl) {
2648             return (zz - zl) * (rlat + zl) / (rlat + zz);
2649         }
2650 
2651     }
2652 
2653     /**
2654      * This class is a placeholder for the computed densities and temperatures.
2655      * <p>
2656      * Densities are provided as an array d such as:
2657      * <ul>
2658      * <li>d[0] = He number density (1/m³)</li>
2659      * <li>d[1] = O number density (1/m³)</li>
2660      * <li>d[2] = N2 number density (1/m³)</li>
2661      * <li>d[3] = O2 number density (1/m³)</li>
2662      * <li>d[4] = Ar number density (1/m³)</li>
2663      * <li>d[5] = total mass density (kg/m³) (*)</li>
2664      * <li>d[6] = H number density (1/m³)</li>
2665      * <li>d[7] = N number density (1/m³)</li>
2666      * <li>d[8] = anomalous oxygen number density (1/m³)
2667      * </ul>
2668      * Total mass density, d[5], is NOT the same for methods gtd7 and gtd7d:
2669      * <ul>
2670      * <li>For gtd7: d[5] is the sum of the mass densities of the species
2671      * He, O, N2, O2, Ar, H and N but does NOT include anomalous oxygen.</li>
2672      * <li>For gtd7d: d[5] is the "effective total mass density for drag" and is the sum
2673      * of the mass densities of all species in this model, INCLUDING anomalous oxygen.</li>
2674      * </ul>
2675      * O, H, and N are set to zero below 72.5 km.
2676      * <p>
2677      * Temperatures are provided as an array t such as:
2678      * <ul>
2679      * <li>t[0] = exospheric temperature (K)</li>
2680      * <li>t[1] = temperature at altitude (K)</li>
2681      * </ul>
2682      * <p>
2683      * t[0] is set to global average for altitudes below 120 km.<br>
2684      * The 120 km gradient is left at global average value for altitudes below 72 km.
2685      * </p>
2686      * @param <T> type of the field elements
2687      * @since 9.0
2688      */
2689     public class FieldOutput<T extends CalculusFieldElement<T>> {
2690 
2691         /** Type of the field elements. */
2692         private final Field<T> field;
2693 
2694         /** Zero for the field. */
2695         private final T zero;
2696 
2697         /** Day of year (from 1 to 365 or 366). */
2698         private final int doy;
2699 
2700         /** Seconds in day (UT scale). */
2701         private final T sec;
2702 
2703         /** Geodetic latitude (°). */
2704         private final T lat;
2705 
2706         /** Geodetic longitude (°). */
2707         private final T lon;
2708 
2709         /** Local apparent solar time (hours). */
2710         private final T hl;
2711 
2712         /** 81 day average of F10.7 flux (centered on day). */
2713         private final double f107a;
2714 
2715         /** Daily F10.7 flux for previous day. */
2716         private final double f107;
2717 
2718         /** Array containing:
2719         *  <ul>
2720         *  <li>0: daily Ap</li>
2721         *  <li>1: 3 hr ap index for current time</li>
2722         *  <li>2: 3 hr ap index for 3 hrs before current time</li>
2723         *  <li>3: 3 hr ap index for 6 hrs before current time</li>
2724         *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
2725         *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
2726         *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
2727         *  </ul>. */
2728         private final double[] ap;
2729 
2730         /** Gravity at latitude (cm/s2). */
2731         private final T glat;
2732 
2733         /** Effective Earth radius at latitude (km). */
2734         private final T rlat;
2735 
2736         /** N2 mixed density at alt. */
2737         private T dm28;
2738 
2739         /** Legendre polynomials. */
2740         private final T[][] plg;
2741 
2742         /** Cosinus of local solar time. */
2743         private final T ctloc;
2744         /** Sinus of local solar time. */
2745         private final T stloc;
2746         /** Square of ctloc. */
2747         private final T c2tloc;
2748         /** Square of stloc. */
2749         private final T s2tloc;
2750         /** Cube of ctloc. */
2751         private final T c3tloc;
2752         /** Cube of stloc. */
2753         private final T s3tloc;
2754 
2755         /** Magnetic activity based on daily ap. */
2756         private double apdf;
2757 
2758         /** Magnetic activity based on daily ap. */
2759         private T apt;
2760 
2761         /** Temperature at nodes for ZN1 scale. */
2762         private final T[] meso_tn1;
2763 
2764         /** Temperature at nodes for ZN2 scale. */
2765         private final T[] meso_tn2;
2766 
2767         /** Temperature at nodes for ZN3 scale. */
2768         private final T[] meso_tn3;
2769 
2770         /** Temperature gradients at end nodes for ZN1 scale. */
2771         private final T[] meso_tgn1;
2772 
2773         /** Temperature gradients at end nodes for ZN2 scale. */
2774         private final T[] meso_tgn2;
2775 
2776         /** Temperature gradients at end nodes for ZN3 scale. */
2777         private final T[] meso_tgn3;
2778 
2779         /** Densities. */
2780         private final T[] densities;
2781 
2782         /** Temperatures. */
2783         private final T[] temperatures;
2784 
2785         /** Simple constructor.
2786          *  @param doy day of year (from 1 to 365 or 366)
2787          *  @param sec seconds in day (UT scale)
2788          *  @param lat geodetic latitude (°)
2789          *  @param lon geodetic longitude (°)
2790          *  @param hl local apparent solar time (hours)
2791          *  @param f107a 81 day average of F10.7 flux (centered on day)
2792          *  @param f107 daily F10.7 flux for previous day
2793          *  @param ap array containing:
2794          *  <ul>
2795          *  <li>0: daily Ap</li>
2796          *  <li>1: 3 hr ap index for current time</li>
2797          *  <li>2: 3 hr ap index for 3 hrs before current time</li>
2798          *  <li>3: 3 hr ap index for 6 hrs before current time</li>
2799          *  <li>4: 3 hr ap index for FOR 9 hrs before current time</li>
2800          *  <li>5: average of eight 3 hr ap indices from 12 to 33 hrs prior to current time</li>
2801          *  <li>6: average of eight 3 hr ap indices from 36 to 57 hrs prior to current time</li>
2802          *  </ul>
2803          */
2804         FieldOutput(final int doy, final T sec,
2805                     final T lat, final T lon, final T hl,
2806                     final double f107a, final double f107, final double[] ap) {
2807 
2808             this.field = sec.getField();
2809             this.zero = field.getZero();
2810 
2811             this.doy   = doy;
2812             this.sec   = sec;
2813             this.lat   = lat;
2814             this.lon   = lon;
2815             this.hl    = hl;
2816             this.f107a = f107a;
2817             this.f107  = f107;
2818             this.ap    = ap.clone();
2819 
2820             this.plg       = MathArrays.buildArray(field, 4, 8);
2821 
2822             this.meso_tn1  = MathArrays.buildArray(field, ZN1.length);
2823             this.meso_tn2  = MathArrays.buildArray(field, ZN2.length);
2824             this.meso_tn3  = MathArrays.buildArray(field, ZN3.length);
2825             this.meso_tgn1 = MathArrays.buildArray(field, 2);
2826             this.meso_tgn2 = MathArrays.buildArray(field, 2);
2827             this.meso_tgn3 = MathArrays.buildArray(field, 2);
2828 
2829             densities       = MathArrays.buildArray(field, 9);
2830             temperatures    = MathArrays.buildArray(field, 2);
2831 
2832             // Calculates latitude variable gravity and effective radius
2833             final T xlat = (sw[2] == 0) ? zero.newInstance(LAT_REF) : lat;
2834             final T c2   = xlat.multiply(2 * DEG_TO_RAD).cos();
2835             glat = c2.multiply(-0.0026373).add(1).multiply(G_REF);
2836             rlat = glat.multiply(2).divide(c2.multiply(2.27e-9).add(3.085462e-6)).multiply(1.e-5);
2837 
2838             // Convert latitude into radians
2839             final T latr = lat.multiply(DEG_TO_RAD);
2840 
2841             // Calculate legendre polynomials
2842             final FieldSinCos<T> scLatr = FastMath.sinCos(latr);
2843             final T c = scLatr.sin();
2844             final T s = scLatr.cos();
2845 
2846             plg[0][1] = c;
2847             plg[0][2] = c.multiply( 3.0).multiply(plg[0][1]).subtract(1.0).divide(2.0);
2848             plg[0][3] = c.multiply( 5.0).multiply(plg[0][2]).subtract(plg[0][1].multiply(2.0)).divide(3.0);
2849             plg[0][4] = c.multiply( 7.0).multiply(plg[0][3]).subtract(plg[0][2].multiply(3.0)).divide(4.0);
2850             plg[0][5] = c.multiply( 9.0).multiply(plg[0][4]).subtract(plg[0][3].multiply(4.0)).divide(5.0);
2851             plg[0][6] = c.multiply(11.0).multiply(plg[0][5]).subtract(plg[0][4].multiply(5.0)).divide(6.0);
2852 
2853             plg[1][1] = s;
2854             plg[1][2] = c.multiply( 3.0).multiply(plg[1][1]);
2855             plg[1][3] = c.multiply( 5.0).multiply(plg[1][2]).subtract(plg[1][1].multiply(3.0)).divide(2.0);
2856             plg[1][4] = c.multiply( 7.0).multiply(plg[1][3]).subtract(plg[1][2].multiply(4.0)).divide(3.0);
2857             plg[1][5] = c.multiply( 9.0).multiply(plg[1][4]).subtract(plg[1][3].multiply(5.0)).divide(4.0);
2858             plg[1][6] = c.multiply(11.0).multiply(plg[1][5]).subtract(plg[1][4].multiply(6.0)).divide(5.0);
2859 
2860             plg[2][2] = s.multiply( 3.0).multiply(plg[1][1]);
2861             plg[2][3] = c.multiply( 5.0).multiply(plg[2][2]);
2862             plg[2][4] = c.multiply( 7.0).multiply(plg[2][3]).subtract(plg[2][2].multiply(5.0)).divide(2.0);
2863             plg[2][5] = c.multiply( 9.0).multiply(plg[2][4]).subtract(plg[2][3].multiply(6.0)).divide(3.0);
2864             plg[2][6] = c.multiply(11.0).multiply(plg[2][5]).subtract(plg[2][4].multiply(7.0)).divide(4.0);
2865             plg[2][7] = c.multiply(13.0).multiply(plg[2][6]).subtract(plg[2][5].multiply(8.0)).divide(5.0);
2866 
2867             plg[3][3] = s.multiply( 5.0).multiply(plg[2][2]);
2868             plg[3][4] = c.multiply( 7.0).multiply(plg[3][3]);
2869             plg[3][5] = c.multiply( 9.0).multiply(plg[3][4]).subtract(plg[3][3].multiply(7.0)).divide(2.0);
2870             plg[3][6] = c.multiply(11.0).multiply(plg[3][5]).subtract(plg[3][4].multiply(8.0)).divide(3.0);
2871 
2872             // Calculate additional data
2873             if (!(sw[7] == 0 && sw[8] == 0 && sw[14] == 0)) {
2874                 final T tloc = hl.multiply(HOUR_TO_RAD);
2875                 final FieldSinCos<T> sc  = FastMath.sinCos(tloc);
2876                 final FieldSinCos<T> sc2 = FieldSinCos.sum(sc, sc);
2877                 final FieldSinCos<T> sc3 = FieldSinCos.sum(sc, sc2);
2878                 stloc  = sc.sin();
2879                 ctloc  = sc.cos();
2880                 s2tloc = sc2.sin();
2881                 c2tloc = sc2.cos();
2882                 s3tloc = sc3.sin();
2883                 c3tloc = sc3.cos();
2884             } else {
2885                 stloc  = zero;
2886                 ctloc  = zero;
2887                 s2tloc = zero;
2888                 c2tloc = zero;
2889                 s3tloc = zero;
2890                 c3tloc = zero;
2891             }
2892 
2893         }
2894 
2895         /** Calculate temperatures and densities not including anomalous oxygen.
2896          *  <p>
2897          *  This method is the thermospheric portion of NRLMSISE-00 for alt > 72.5 km.
2898          *  </p>
2899          *  <p>NOTES ON INPUT VARIABLES:<br>
2900          *  Seconds, Local Time, and Longitude are used independently in the
2901          *  model and are not of equal importance for every situation.<br>
2902          *  For the most physically realistic calculation these three
2903          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
2904          *  The Equation of Time departures from the above formula
2905          *  for apparent local time can be included if available but
2906          *  are of minor importance.<br><br>
2907          *
2908          *  f107 and f107A values used to generate the model correspond
2909          *  to the 10.7 cm radio flux at the actual distance of the Earth
2910          *  from the Sun rather than the radio flux at 1 AU. The following
2911          *  site provides both classes of values:<br>
2912          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
2913          *
2914          *  f107, f107A, and ap effects are neither large nor well established below 80 km
2915          *  and these parameters should be set to 150., 150., and 4. respectively.
2916          *  </p>
2917          *  @param alt altitude (km)
2918          */
2919         void gts7(final T alt) {
2920 
2921             // Thermal diffusion coefficients for species
2922             final double[] alpha = {-0.38, 0.0, 0.0, 0.0, 0.17, 0.0, -0.38, 0.0, 0.0};
2923             // Altitude limits for net density computation for species
2924             final double[] altl  = {200.0, 300.0, 160.0, 250.0, 240.0, 450.0, 320.0, 450.0};
2925             // N2 mixed density
2926             final double xmm = PDM[2][4];
2927 
2928             /**** Exospheric temperature ****/
2929             T tinf = zero.newInstance(PTM[0] * PT[0]);
2930             // Tinf variations not important below ZA or ZN[0]
2931             if (alt.getReal() > ZN1[0]) {
2932                 tinf = tinf.multiply(globe7(PT).multiply(sw[16]).add(1));
2933             }
2934             setTemperature(EXOSPHERIC, tinf);
2935 
2936             // Gradient variations not important below ZN[4]
2937             T g0 = zero.newInstance(PTM[3] * PS[0]);
2938             if (alt.getReal() > ZN1[4]) {
2939                 g0 = g0.multiply(globe7(PS).multiply(sw[19]).add(1));
2940             }
2941 
2942             // Temperature at lower boundary
2943             T tlb = zero.newInstance(PTM[1] * PD[3][0]);
2944             tlb = tlb.multiply(globe7(PD[3]).multiply(sw[17]).add(1));
2945 
2946             // Slope
2947             final T s = g0.divide(tinf.subtract(tlb));
2948 
2949             // Lower thermosphere temp variations not significant for density above 300 km
2950             meso_tn1[1]  = zero.newInstance(PTM[6] * PTL[0][0]);
2951             meso_tn1[2]  = zero.newInstance(PTM[2] * PTL[1][0]);
2952             meso_tn1[3]  = zero.newInstance(PTM[7] * PTL[2][0]);
2953             meso_tn1[4]  = zero.newInstance(PTM[4] * PTL[3][0]);
2954             meso_tgn1[1] = zero.newInstance(PTM[8] * PMA[8][0]);
2955             if (alt.getReal() < 300.0) {
2956                 final double r = PTM[4] * PTL[3][0];
2957                 meso_tn1[1]  =  meso_tn1[1].divide(glob7s(PTL[0]).multiply(sw[18]         ).negate().add(1));
2958                 meso_tn1[2]  =  meso_tn1[2].divide(glob7s(PTL[1]).multiply(sw[18]         ).negate().add(1));
2959                 meso_tn1[3]  =  meso_tn1[3].divide(glob7s(PTL[2]).multiply(sw[18]         ).negate().add(1));
2960                 meso_tn1[4]  =  meso_tn1[4].divide(glob7s(PTL[3]).multiply(sw[18] * sw[20]).negate().add(1));
2961                 meso_tgn1[1] =  meso_tgn1[1].multiply(glob7s(PMA[8]).multiply(sw[18] * sw[20]).add(1));
2962                 meso_tgn1[1] =  meso_tgn1[1].multiply(meso_tn1[4].multiply(meso_tn1[4]).divide(r * r));
2963             }
2964 
2965             /**** Temperature at altitude ****/
2966             setTemperature(ALTITUDE, densu(alt, zero.newInstance(1.0), tinf, tlb, 0, 0, PTM[5], s));
2967 
2968             /**** N2 density ****/
2969             /*   Density variation factor at Zlb */
2970             final T g28 = globe7(PD[2]).multiply(sw[21]);
2971             /* Diffusive density at Zlb */
2972             final T db28 = g28.exp().multiply(PDM[2][0] * PD[2][0]);
2973             /* Diffusive density at Alt */
2974             T diffusiveDensity = densu(alt, db28, tinf, tlb, N2_MASS, alpha[2], PTM[5], s);
2975             setDensity(MOLECULAR_NITROGEN, diffusiveDensity);
2976             // Variation of turbopause height
2977             final T zhf = lat.multiply(DEG_TO_RAD).sin().
2978                             multiply(sw[5] * PDL[0][24] * FastMath.cos(DAY_TO_RAD * (doy - PT[13]))).
2979                             add(1).
2980                             multiply(PDL[1][24]);
2981             /* Turbopause */
2982             final T zh28  = zhf.multiply(PDM[2][2]);
2983             final double zhm28 = PDM[2][3] * PDL[1][5];
2984             /* Mixed density at Zlb */
2985             final T b28 = densu(zh28, db28, tinf, tlb, N2_MASS - xmm, alpha[2] - 1.0, PTM[5], s);
2986             if (sw[15] != 0 && alt.getReal() <= altl[2]) {
2987                 /*  Mixed density at Alt */
2988                 dm28 = densu(alt, b28, tinf, tlb, xmm, alpha[2], PTM[5], s);
2989                 /*  Net density at Alt */
2990                 setDensity(MOLECULAR_NITROGEN, dnet(diffusiveDensity, dm28, zhm28, xmm, N2_MASS));
2991             } else {
2992                 dm28 = zero;
2993             }
2994 
2995             /**** He density ****/
2996             /*   Density variation factor at Zlb */
2997             final T g4 = globe7(PD[0]).multiply(sw[21]);
2998             /*  Diffusive density at Zlb */
2999             final T db04 = g4.exp().multiply(PDM[0][0] * PD[0][0]);
3000             /*  Diffusive density at Alt */
3001             diffusiveDensity = densu(alt, db04, tinf, tlb, HE_MASS, alpha[0], PTM[5], s);
3002             setDensity(HELIUM, diffusiveDensity);
3003             if (sw[15] != 0 && alt.getReal() < altl[0]) {
3004                 /*  Turbopause */
3005                 final double zh04 = PDM[0][2];
3006                 /*  Mixed density at Zlb */
3007                 final T b04 = densu(zero.newInstance(zh04), db04, tinf, tlb, HE_MASS - xmm, alpha[0] - 1., PTM[5], s);
3008                 /*  Mixed density at Alt */
3009                 final T dm04 = densu(alt, b04, tinf, tlb, xmm, 0., PTM[5], s);
3010                 final double zhm04 = zhm28;
3011                 /*  Net density at Alt */
3012                 diffusiveDensity = dnet(diffusiveDensity, dm04, zhm04, xmm, HE_MASS);
3013                 /*  Correction to specified mixing ratio at ground */
3014                 final T rl = b28.multiply(PDM[0][1]).divide(b04).log();
3015                 final double zc04 = PDM[0][4] * PDL[1][0];
3016                 final double hc04 = PDM[0][5] * PDL[1][1];
3017                 /*  Net density corrected at Alt */
3018                 setDensity(HELIUM, diffusiveDensity.multiply(ccor(alt, rl, hc04, zc04)));
3019             }
3020 
3021             /**** O density ****/
3022             /* Density variation factor at Zlb */
3023             final T g16 = globe7(PD[1]).multiply(sw[21]);
3024             /* Diffusive density at Zlb */
3025             final T db16 = g16.exp().multiply(PDM[1][0] * PD[1][0]);
3026             /* Diffusive density at Alt */
3027             diffusiveDensity = densu(alt, db16, tinf, tlb, O_MASS, alpha[1], PTM[5], s);
3028             setDensity(ATOMIC_OXYGEN, diffusiveDensity);
3029             if (sw[15] != 0 && alt.getReal() < altl[1]) {
3030                 /* Turbopause */
3031                 final double zh16 = PDM[1][2];
3032                 /* Mixed density at Zlb */
3033                 final T b16 = densu(zero.newInstance(zh16), db16, tinf, tlb, O_MASS - xmm, alpha[1] - 1.0, PTM[5], s);
3034                 /* Mixed density at Alt */
3035                 final T dm16 = densu(alt, b16, tinf, tlb, xmm, 0., PTM[5], s);
3036                 final double zhm16 = zhm28;
3037                 /* Net density at Alt */
3038                 diffusiveDensity = dnet(diffusiveDensity, dm16, zhm16, xmm, O_MASS);
3039                 final double rl = PDM[1][1] * PDL[1][16] * (1.0 + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
3040                 final double hc16 = PDM[1][5] * PDL[1][3];
3041                 final double zc16 = PDM[1][4] * PDL[1][2];
3042                 final double hc216 = PDM[1][5] * PDL[1][4];
3043                 diffusiveDensity = diffusiveDensity.multiply(ccor2(alt, rl, hc16, zc16, hc216));
3044                 /* Chemistry correction */
3045                 final double hcc16 = PDM[1][7] * PDL[1][13];
3046                 final double zcc16 = PDM[1][6] * PDL[1][12];
3047                 final double rc16  = PDM[1][3] * PDL[1][14];
3048                 /* Net density corrected at Alt */
3049                 setDensity(ATOMIC_OXYGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc16), hcc16, zcc16)));
3050             }
3051 
3052             /**** O2 density ****/
3053             /* Density variation factor at Zlb */
3054             final T g32 = globe7(PD[4]).multiply(sw[21]);
3055             /* Diffusive density at Zlb */
3056             final T db32 = g32.exp().multiply(PDM[3][0] * PD[4][0]);
3057             /* Diffusive density at Alt */
3058             diffusiveDensity = densu(alt, db32, tinf, tlb, O2_MASS, alpha[3], PTM[5], s);
3059             setDensity(MOLECULAR_OXYGEN, diffusiveDensity);
3060             if (sw[15] != 0) {
3061                 if (alt.getReal() <= altl[3]) {
3062                     /* Turbopause */
3063                     final double zh32 = PDM[3][2];
3064                     /* Mixed density at Zlb */
3065                     final T b32 = densu(zero.newInstance(zh32), db32, tinf, tlb, O2_MASS - xmm, alpha[3] - 1., PTM[5], s);
3066                     /* Mixed density at Alt */
3067                     final T dm32 = densu(alt, b32, tinf, tlb, xmm, 0., PTM[5], s);
3068                     final double zhm32 = zhm28;
3069                     /* Net density at Alt */
3070                     diffusiveDensity = dnet(diffusiveDensity, dm32, zhm32, xmm, O2_MASS);
3071                     /* Correction to specified mixing ratio at ground */
3072                     final T rl = b28.multiply(PDM[3][1]).divide(b32).log();
3073                     final double hc32 = PDM[3][5] * PDL[1][7];
3074                     final double zc32 = PDM[3][4] * PDL[1][6];
3075                     diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc32, zc32));
3076                 }
3077                 /* Correction for general departure from diffusive equilibrium above Zlb */
3078                 final double hcc32  = PDM[3][7] * PDL[1][22];
3079                 final double hcc232 = PDM[3][7] * PDL[0][22];
3080                 final double zcc32  = PDM[3][6] * PDL[1][21];
3081                 final double rc32   = PDM[3][3] * PDL[1][23] * (1. + sw[1] * PDL[0][23] * (f107a - FLUX_REF));
3082                 /* Net density corrected at Alt */
3083                 setDensity(MOLECULAR_OXYGEN, diffusiveDensity.multiply(ccor2(alt, rc32, hcc32, zcc32, hcc232)));
3084             }
3085 
3086             /**** Ar density ****/
3087             /* Density variation factor at Zlb */
3088             final T g40 = globe7(PD[5]).multiply(sw[21]);
3089             /* Diffusive density at Zlb */
3090             final T db40 = g40.exp().multiply(PDM[4][0] * PD[5][0]);
3091             /* Diffusive density at Alt */
3092             diffusiveDensity = densu(alt, db40, tinf, tlb, AR_MASS, alpha[4], PTM[5], s);
3093             setDensity(ARGON, diffusiveDensity);
3094             if (sw[15] != 0 && alt.getReal() <= altl[4]) {
3095                 /* Turbopause */
3096                 final double zh40 = PDM[4][2];
3097                 /* Mixed density at Zlb */
3098                 final T b40 = densu(zero.newInstance(zh40), db40, tinf, tlb, AR_MASS - xmm, alpha[4] - 1., PTM[5], s);
3099                 /* Mixed density at Alt */
3100                 final T dm40 = densu(alt, b40, tinf, tlb, xmm, 0., PTM[5], s);
3101                 final double zhm40 = zhm28;
3102                 /* Net density at Alt */
3103                 diffusiveDensity = dnet(diffusiveDensity, dm40, zhm40, xmm, AR_MASS);
3104                 /* Correction to specified mixing ratio at ground */
3105                 final T rl = b28.multiply(PDM[4][1]).divide(b40).log();
3106                 final double hc40 = PDM[4][5] * PDL[1][9];
3107                 final double zc40 = PDM[4][4] * PDL[1][8];
3108                 /* Net density corrected at Alt */
3109                 setDensity(ARGON, diffusiveDensity.multiply(ccor(alt, rl, hc40, zc40)));
3110             }
3111 
3112             /**** H density ****/
3113             /* Density variation factor at Zlb */
3114             final T g1 = globe7(PD[6]).multiply(sw[21]);
3115             /* Diffusive density at Zlb */
3116             final T db01 = g1.exp().multiply(PDM[5][0] * PD[6][0]);
3117             /* Diffusive density at Alt */
3118             diffusiveDensity = densu(alt, db01, tinf, tlb, H_MASS, alpha[6], PTM[5], s);
3119             setDensity(HYDROGEN, diffusiveDensity);
3120             if (sw[15] != 0 && alt.getReal() <= altl[6]) {
3121                 /* Turbopause */
3122                 final double zh01 = PDM[5][2];
3123                 /* Mixed density at Zlb */
3124                 final T b01 = densu(zero.newInstance(zh01), db01, tinf, tlb, H_MASS - xmm, alpha[6] - 1., PTM[5], s);
3125                 /* Mixed density at Alt */
3126                 final T dm01 = densu(alt, b01, tinf, tlb, xmm, 0., PTM[5], s);
3127                 final double zhm01 = zhm28;
3128                 /* Net density at Alt */
3129                 diffusiveDensity = dnet(diffusiveDensity, dm01, zhm01, xmm, H_MASS);
3130                 /* Correction to specified mixing ratio at ground */
3131                 final T rl = b28.multiply(PDM[5][1] * FastMath.sqrt(PDL[1][17] * PDL[1][17])).divide(b01).log();
3132                 final double hc01 = PDM[5][5] * PDL[1][11];
3133                 final double zc01 = PDM[5][4] * PDL[1][10];
3134                 diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc01, zc01));
3135                 /* Chemistry correction */
3136                 final double hcc01 = PDM[5][7] * PDL[1][19];
3137                 final double zcc01 = PDM[5][6] * PDL[1][18];
3138                 final double rc01 = PDM[5][3] * PDL[1][20];
3139                 /* Net density corrected at Alt */
3140                 setDensity(HYDROGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc01), hcc01, zcc01)));
3141             }
3142 
3143             /**** N density ****/
3144             /* Density variation factor at Zlb */
3145             final T g14 = globe7(PD[7]).multiply(sw[21]);
3146             /* Diffusive density at Zlb */
3147             final T db14 = g14.exp().multiply(PDM[6][0] * PD[7][0]);
3148             /* Diffusive density at Alt */
3149             diffusiveDensity = densu(alt, db14, tinf, tlb, N_MASS, alpha[7], PTM[5], s);
3150             setDensity(ATOMIC_NITROGEN, diffusiveDensity);
3151             if (sw[15] != 0 && alt.getReal() <= altl[7]) {
3152                 /* Turbopause */
3153                 final double zh14 = PDM[6][2];
3154                 /* Mixed density at Zlb */
3155                 final T b14 = densu(zero.newInstance(zh14), db14, tinf, tlb, N_MASS - xmm, alpha[7] - 1., PTM[5], s);
3156                 /* Mixed density at Alt */
3157                 final T dm14 = densu(alt, b14, tinf, tlb, xmm, 0., PTM[5], s);
3158                 final double zhm14 = zhm28;
3159                 /* Net density at Alt */
3160                 diffusiveDensity = dnet(diffusiveDensity, dm14, zhm14, xmm, N_MASS);
3161                 /* Correction to specified mixing ratio at ground */
3162                 final T rl = b28.multiply(PDM[6][1] * PDL[0][2]).divide(b14).log();
3163                 final double hc14 = PDM[6][5] * PDL[0][1];
3164                 final double zc14 = PDM[6][4] * PDL[0][0];
3165                 diffusiveDensity = diffusiveDensity.multiply(ccor(alt, rl, hc14, zc14));
3166                 /* Chemistry correction */
3167                 final double hcc14 = PDM[6][7] * PDL[0][4];
3168                 final double zcc14 = PDM[6][6] * PDL[0][3];
3169                 final double rc14 = PDM[6][3] * PDL[0][5];
3170                 /* Net density corrected at Alt */
3171                 setDensity(ATOMIC_NITROGEN, diffusiveDensity.multiply(ccor(alt, zero.newInstance(rc14), hcc14, zcc14)));
3172             }
3173 
3174             /**** Anomalous O density ****/
3175             final T g16h = globe7(PD[8]).multiply(sw[21]);
3176             final T db16h = g16h.exp().multiply(PDM[7][0] * PD[8][0]);
3177             final double tho   = PDM[7][9] * PDL[0][6];
3178             diffusiveDensity = densu(alt, db16h, zero.newInstance(tho), zero.newInstance(tho), O_MASS, alpha[8], PTM[5], s);
3179             final double zsht = PDM[7][5];
3180             final double zmho = PDM[7][4];
3181             final T zsho = scalh(zmho, O_MASS, tho);
3182             diffusiveDensity = diffusiveDensity.multiply(alt.negate().add(zmho).divide(zsht).exp().subtract(1).multiply(-zsht).divide(zsho).exp());
3183             setDensity(ANOMALOUS_OXYGEN, diffusiveDensity);
3184 
3185             // Convert densities from cm-3 to m-3
3186             for (int i = 0; i < 9; i++) {
3187                 setDensity(i, getDensity(i).multiply(1.0e+06));
3188             }
3189 
3190             /**** Total mass density ****/
3191             final T tmd =     getDensity(HELIUM)            .multiply(HE_MASS).
3192                           add(getDensity(ATOMIC_OXYGEN)     .multiply( O_MASS)).
3193                           add(getDensity(MOLECULAR_NITROGEN).multiply(N2_MASS)).
3194                           add(getDensity(MOLECULAR_OXYGEN)  .multiply(O2_MASS)).
3195                           add(getDensity(ARGON)             .multiply(AR_MASS)).
3196                           add(getDensity(HYDROGEN)          .multiply( H_MASS)).
3197                           add(getDensity(ATOMIC_NITROGEN)   .multiply( N_MASS)).
3198                           multiply(AMU);
3199             setDensity(TOTAL_MASS, tmd);
3200 
3201         }
3202 
3203         /** Calculate temperatures and densities not including anomalous oxygen.
3204          *  <p>NOTES ON INPUT VARIABLES:<br>
3205          *  Seconds, Local Time, and Longitude are used independently in the
3206          *  model and are not of equal importance for every situation.<br>
3207          *  For the most physically realistic calculation these three
3208          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
3209          *  The Equation of Time departures from the above formula
3210          *  for apparent local time can be included if available but
3211          *  are of minor importance.<br><br>
3212          *
3213          *  f107 and f107A values used to generate the model correspond
3214          *  to the 10.7 cm radio flux at the actual distance of the Earth
3215          *  from the Sun rather than the radio flux at 1 AU. The following
3216          *  site provides both classes of values:<br>
3217          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br><br>
3218          *
3219          *  f107, f107A, and ap effects are neither large nor well established below 80 km
3220          *  and these parameters should be set to 150., 150., and 4. respectively.
3221          *  </p>
3222          *  @param alt altitude (km)
3223          */
3224         void gtd7(final T alt) {
3225 
3226             // Calculates for thermosphere/mesosphere (above ZN2[0])
3227             final T altt = (alt.getReal() > ZN2[0]) ? alt : zero.newInstance(ZN2[0]);
3228             gts7(altt);
3229             if (alt.getReal() >= ZN2[0]) {
3230                 return;
3231             }
3232 
3233             // Calculates for lower mesosphere/upper stratosphere (between ZN2[0] and ZN3[0]):
3234             // Temperature at nodes and gradients at end nodes
3235             // Inverse temperature a linear function of spherical harmonics
3236             final double r = PMA[2][0] * PAVGM[2];
3237             meso_tgn2[0] = meso_tgn1[1];
3238             meso_tn2[0]  = meso_tn1[4];
3239             meso_tn2[1]  = glob7s(PMA[0]).multiply(sw[20]         ).negate().add(1).reciprocal().multiply(PMA[0][0] * PAVGM[0]);
3240             meso_tn2[2]  = glob7s(PMA[1]).multiply(sw[20]         ).negate().add(1).reciprocal().multiply(PMA[1][0] * PAVGM[1]);
3241             meso_tn2[3]  = glob7s(PMA[2]).multiply(sw[20] * sw[22]).negate().add(1).reciprocal().multiply(PMA[2][0] * PAVGM[2]);
3242             meso_tgn2[1] = glob7s(PMA[9]).multiply(sw[20] * sw[22]).add(1).multiply(PMA[9][0] * PAVGM[8]).
3243                            multiply(meso_tn2[3]).multiply(meso_tn2[3]).divide(r * r);
3244             meso_tn3[0]  = meso_tn2[3];
3245 
3246             // Calculates for lower stratosphere and troposphere (below ZN3[0])
3247             // Temperature at nodes and gradients at end nodes
3248             // Inverse temperature a linear function of spherical harmonics
3249             if (alt.getReal() <= ZN3[0]) {
3250                 final double q = PMA[6][0] * PAVGM[6];
3251                 meso_tgn3[0] = meso_tgn2[1];
3252                 meso_tn3[1]  = glob7s(PMA[3]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[3][0] * PAVGM[3]);
3253                 meso_tn3[2]  = glob7s(PMA[4]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[4][0] * PAVGM[4]);
3254                 meso_tn3[3]  = glob7s(PMA[5]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[5][0] * PAVGM[5]);
3255                 meso_tn3[4]  = glob7s(PMA[6]).multiply(sw[22]).negate().add(1).reciprocal().multiply(PMA[6][0] * PAVGM[6]);
3256                 meso_tgn3[1] = glob7s(PMA[7]).multiply(sw[22])         .add(1).multiply(PMA[7][0] * PAVGM[7]).
3257                                multiply(meso_tn3[4]).multiply(meso_tn3[4]).divide(q * q);
3258 
3259             }
3260 
3261             // Linear transition to full mixing below ZN2[0]
3262             final T dmc = (alt.getReal() > ZMIX) ?
3263                            alt.subtract(ZN2[0]).divide(ZN2[0] - ZMIX).add(1) :
3264                            zero;
3265             final T dz28 = getDensity(MOLECULAR_NITROGEN);
3266 
3267             // N2 density
3268             final T dm28m = dm28.multiply(1.0e+06);
3269             T dmr = dz28.divide(dm28m).subtract(1);
3270             T dst = densm(alt, dm28m, PDM[2][4]).multiply(dmr.multiply(dmc).add(1));
3271             setDensity(MOLECULAR_NITROGEN, dst);
3272 
3273             // HE density
3274             dmr = getDensity(HELIUM).divide(dz28.multiply(PDM[0][1])).subtract(1);
3275             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[0][1]).multiply(dmr.multiply(dmc).add(1));
3276             setDensity(HELIUM, dst);
3277 
3278             // O density
3279             setDensity(ATOMIC_OXYGEN, zero);
3280             setDensity(ANOMALOUS_OXYGEN, zero);
3281 
3282             // O2 density
3283             dmr = getDensity(MOLECULAR_OXYGEN).divide(dz28.multiply(PDM[3][1])).subtract(1);
3284             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[3][1]).multiply(dmr.multiply(dmc).add(1));
3285             setDensity(MOLECULAR_OXYGEN, dst);
3286 
3287             // AR density
3288             dmr = getDensity(ARGON).divide(dz28.multiply(PDM[4][1])).subtract(1);
3289             dst = getDensity(MOLECULAR_NITROGEN).multiply(PDM[4][1]).multiply(dmr.multiply(dmc).add(1));
3290             setDensity(ARGON, dst);
3291 
3292             // H density
3293             setDensity(HYDROGEN, zero);
3294 
3295             // N density
3296             setDensity(ATOMIC_NITROGEN, zero);
3297 
3298             // Total mass density
3299             final T tmd =       getDensity(HELIUM)            .multiply(HE_MASS).
3300                             add(getDensity(ATOMIC_OXYGEN)     .multiply( O_MASS)).
3301                             add(getDensity(MOLECULAR_NITROGEN).multiply(N2_MASS)).
3302                             add(getDensity(MOLECULAR_OXYGEN)  .multiply(O2_MASS)).
3303                             add(getDensity(ARGON)             .multiply(AR_MASS)).
3304                             add(getDensity(HYDROGEN)          .multiply( H_MASS)).
3305                             add(getDensity(ATOMIC_NITROGEN)   .multiply( N_MASS)).
3306                             multiply(AMU);
3307             setDensity(TOTAL_MASS, tmd);
3308 
3309             // Temperature at altitude
3310             setTemperature(ALTITUDE, densm(alt, field.getOne(), 0));
3311 
3312         }
3313 
3314         /** Calculate temperatures and densities including anomalous oxygen.
3315          *  <p></p>
3316          *  <p>NOTES ON INPUT VARIABLES:<br>
3317          *  Seconds, Local Time, and Longitude are used independently in the
3318          *  model and are not of equal importance for every situation.<br>
3319          *  For the most physically realistic calculation these three
3320          *  variables should be consistent (lst=sec/3600 + lon/15).<br>
3321          *  The Equation of Time departures from the above formula
3322          *  for apparent local time can be included if available but
3323          *  are of minor importance.<br>
3324          *  <br>
3325          *  f107 and f107A values used to generate the model correspond
3326          *  to the 10.7 cm radio flux at the actual distance of the Earth
3327          *  from the Sun rather than the radio flux at 1 AU. The following
3328          *  site provides both classes of values:<br>
3329          *  ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/<br>
3330          *  <br>
3331          *  f107, f107A, and ap effects are neither large nor well established below 80 km
3332          *  and these parameters should be set to 150., 150., and 4. respectively.
3333          *  </p>
3334          *  @param alt altitude (km)
3335          */
3336         void gtd7d(final T alt) {
3337 
3338             // Compute densities and temperatures
3339             gtd7(alt);
3340 
3341             // Update the total mass density with anomalous oxygen contribution
3342             final T dTot = getDensity(TOTAL_MASS).add(getDensity(ANOMALOUS_OXYGEN).multiply( AMU * O_MASS));
3343             setDensity(TOTAL_MASS, dTot);
3344 
3345         }
3346 
3347         /** Set one density.
3348          * @param index one of the nine elements :
3349          * <ul>
3350          * <li>{@link #HELIUM}</li>
3351          * <li>{@link #ATOMIC_OXYGEN}</li>
3352          * <li>{@link #MOLECULAR_NITROGEN}</li>
3353          * <li>{@link #MOLECULAR_OXYGEN}</li>
3354          * <li>{@link #ARGON}</li>
3355          * <li>{@link #TOTAL_MASS}</li>
3356          * <li>{@link #HYDROGEN}</li>
3357          * <li>{@link #ATOMIC_NITROGEN}</li>
3358          * <li>{@link #ATOMIC_NITROGEN}</li>
3359          * </ul>
3360          * @param d the value of density to set
3361          */
3362         void setDensity(final int index, final T d) {
3363             densities[index] = d;
3364         }
3365 
3366         /** Set one temperature.
3367          * @param index one of the two elements :
3368          * <ul>
3369          * <li>{@link #EXOSPHERIC}</li>
3370          * <li>{@link #ALTITUDE}</li>
3371          * </ul>
3372          * @param t the value of temperature to set
3373          */
3374         void setTemperature(final int index, final T t) {
3375             temperatures[index] = t;
3376         }
3377 
3378         /** Get one of the stored densities.
3379          * @param index one of the nine elements :
3380          * <ul>
3381          * <li>{@link #HELIUM}</li>
3382          * <li>{@link #ATOMIC_OXYGEN}</li>
3383          * <li>{@link #MOLECULAR_NITROGEN}</li>
3384          * <li>{@link #MOLECULAR_OXYGEN}</li>
3385          * <li>{@link #ARGON}</li>
3386          * <li>{@link #TOTAL_MASS}</li>
3387          * <li>{@link #HYDROGEN}</li>
3388          * <li>{@link #ATOMIC_NITROGEN}</li>
3389          * <li>{@link #ATOMIC_NITROGEN}</li>
3390          * </ul>
3391          * @return the requested density
3392          */
3393         public T getDensity(final int index) {
3394             return densities[index];
3395         }
3396 
3397         /** Calculate G(L) function with upper thermosphere parameters.
3398          *  @param p array of parameters
3399          *  @return G(L) value
3400          */
3401         private T globe7(final double[] p) {
3402 
3403             final T[] t = MathArrays.buildArray(field, 14);
3404             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
3405             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
3406             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
3407             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
3408 
3409             // F10.7 effect
3410             final double df  = f107  - f107a;
3411             final double dfa = f107a - FLUX_REF;
3412             t[0] = zero.newInstance(p[19] * df * (1.0 + p[59] * dfa) +
3413                                     p[20] * df * df +
3414                                     p[21] * dfa +
3415                                     p[29] * dfa * dfa);
3416 
3417             final double f1 = 1.0 + (p[47] * dfa + p[19] * df + p[20] * df * df) * swc[1];
3418             final double f2 = 1.0 + (p[49] * dfa + p[19] * df + p[20] * df * df) * swc[1];
3419 
3420             // Time independent
3421             t[1] =     plg[0][2].multiply(p[ 1]).
3422                    add(plg[0][4].multiply(p[ 2])).
3423                    add(plg[0][6].multiply(p[22])).
3424                    add(plg[0][2].multiply(p[14] * dfa * swc[1])).
3425                    add(plg[0][1].multiply(p[26]));
3426 
3427             // Symmetrical annual
3428             t[2] = zero.newInstance(p[18] * cd32);
3429 
3430             // Symmetrical semiannual
3431             t[3] = plg[0][2].multiply(p[16]).add(p[15]).multiply(cd18);
3432 
3433             // Asymmetrical annual
3434             t[4] = plg[0][1].multiply(p[9]).add(plg[0][3].multiply(p[10])).multiply(f1 * cd14);
3435 
3436             // Asymmetrical semiannual
3437             t[5] = plg[0][1].multiply(p[37] * cd39);
3438 
3439             // Diurnal
3440             if (sw[7] != 0) {
3441                 final T t71 = plg[1][2].multiply(p[11] * cd14 * swc[5]);
3442                 final T t72 = plg[1][2].multiply(p[12] * cd14 * swc[5]);
3443                 t[6] =      plg[1][1].multiply(p[3]).add(plg[1][3].multiply(p[4])).add(plg[1][5].multiply(p[27])).add(t71).multiply(ctloc).
3444                         add(plg[1][1].multiply(p[6]).add(plg[1][3].multiply(p[7])).add(plg[1][5].multiply(p[28])).add(t72).multiply(stloc)).
3445                         multiply(f2);
3446             }
3447 
3448             // Semidiurnal
3449             if (sw[8] != 0) {
3450                 final T t81 = plg[2][3].multiply(p[23]).add(plg[2][5].multiply(p[35])).multiply(cd14 * swc[5]);
3451                 final T t82 = plg[2][3].multiply(p[33]).add(plg[2][5].multiply(p[36])).multiply(cd14 * swc[5]);
3452                 t[7] =     plg[2][2].multiply(p[5]).add(plg[2][4].multiply(p[41])).add(t81).multiply(c2tloc).
3453                        add(plg[2][2].multiply(p[8]).add(plg[2][4].multiply(p[42])).add(t82).multiply(s2tloc)).
3454                        multiply(f2);
3455             }
3456 
3457             // Terdiurnal
3458             if (sw[14] != 0) {
3459                 t[13] =     plg[3][3].multiply(p[39]).add(plg[3][4].multiply(p[93]).add(plg[3][6].multiply(p[46])).multiply(cd14 * swc[5])).multiply(s3tloc).
3460                         add(plg[3][3].multiply(p[40]).add(plg[3][4].multiply(p[94]).add(plg[3][6].multiply(p[48])).multiply(cd14 * swc[5])).multiply(c3tloc)).
3461                         multiply(f2);
3462             }
3463 
3464             // magnetic activity based on daily ap
3465             if (sw[9] == -1) {
3466                 if (p[51] != 0) {
3467                     final T exp1 = lat.abs().negate().add(LAT_REF).multiply(p[138]).add(1).
3468                                     reciprocal().multiply(-10800.0 * FastMath.abs(p[51])).
3469                                     exp();
3470                     final double p24 = FastMath.max(p[24], 1.0e-4);
3471                     apt = sg0(min(0.99999, exp1), p24, p[25]);
3472                     t[8] =      plg[0][2].multiply(p[96]).add(plg[0][4].multiply(p[54])).add(p[50]).
3473                            add((plg[0][1].multiply(p[125]).add(plg[0][3].multiply(p[126])).add(plg[0][5].multiply(p[127]))).multiply(cd14 * swc[5])).
3474                            add((plg[1][1].multiply(p[128]).add(plg[1][3].multiply(p[129])).add(plg[1][5].multiply(p[130]))).multiply(swc[7]).multiply(hl.subtract(p[131]).multiply(HOUR_TO_RAD).cos())).
3475                            multiply(apt);
3476                 }
3477             } else {
3478                 final double apd = ap[0] - 4.0;
3479                 final double p44 = (p[43] < 0.) ? 1.0E-5 : p[43];
3480                 final double p45 = p[44];
3481                 apdf = apd + (p45 - 1.0) * (apd + (FastMath.exp(-p44 * apd) - 1.0) / p44);
3482                 if (sw[9] != 0) {
3483                     t[8] =      plg[0][2].multiply(p[45]).add(plg[0][4].multiply(p[34])).add(p[32]).
3484                            add((plg[0][1].multiply(p[100]).add(plg[0][3].multiply(p[101])).add(plg[0][5].multiply(p[102]))).multiply(cd14 * swc[5])).
3485                            add((plg[1][1].multiply(p[121]).add(plg[1][3].multiply(p[122])).add(plg[1][5].multiply(p[123]))).multiply(swc[7]).multiply(hl.subtract(p[124]).multiply(HOUR_TO_RAD).cos())).
3486                            multiply(apdf);
3487                 }
3488             }
3489 
3490             if (sw[10] != 0) {
3491                 final T lonr = lon.multiply(DEG_TO_RAD);
3492                 final FieldSinCos<T> scLonr = FastMath.sinCos(lonr);
3493                 // Longitudinal
3494                 if (sw[11] != 0) {
3495                     t[10] =         plg[1][2].multiply(p[ 64]) .add(plg[1][4].multiply(p[ 65])).add(plg[1][6].multiply(p[ 66])).
3496                                 add(plg[1][1].multiply(p[103])).add(plg[1][3].multiply(p[104])).add(plg[1][5].multiply(p[105])).
3497                                 add((plg[1][1].multiply(p[109])).add(plg[1][3].multiply(p[110])).add(plg[1][5].multiply(p[111])).multiply(swc[5] * cd14)).
3498                                 multiply(scLonr.cos()).
3499                             add(    plg[1][2].multiply(p[ 90]) .add(plg[1][4].multiply(p[ 91])).add(plg[1][6].multiply(p[ 92])).
3500                                 add(plg[1][1].multiply(p[106])).add(plg[1][3].multiply(p[107])).add(plg[1][5].multiply(p[108])).
3501                                 add((plg[1][1].multiply(p[112])).add(plg[1][3].multiply(p[113])).add(plg[1][5].multiply(p[114])).multiply(swc[5] * cd14)).
3502                                 multiply(scLonr.sin())).
3503                             multiply(1.0 + p[80] * dfa * swc[1]);
3504                 }
3505 
3506                 // ut and mixed ut, longitude
3507                 if (sw[12] != 0) {
3508                     t[11] =          plg[0][1].multiply(p[95]).add(1).multiply(1.0 + p[81] * dfa * swc[1]).
3509                             multiply(plg[0][1].multiply(p[119] * swc[5] * cd14).add(1)).
3510                             multiply(plg[0][1].multiply(p[68]).add(plg[0][3].multiply(p[69])).add(plg[0][5].multiply(p[70]))).
3511                             multiply(sec.subtract(p[71]).multiply(SEC_TO_RAD).cos());
3512                     t[11] = t[11].
3513                             add(plg[2][3].multiply(p[76]).add(plg[2][5].multiply(p[77])).add(plg[2][7].multiply(p[78])).
3514                                 multiply(swc[11] * (1.0 + p[137] * dfa * swc[1])).
3515                                 multiply(sec.subtract(p[79]).multiply(SEC_TO_RAD).add(lonr.multiply(2)).cos()));
3516                 }
3517 
3518                 /* ut, longitude magnetic activity */
3519                 if (sw[13] != 0) {
3520                     if (sw[9] == -1) {
3521                         if (p[51] != 0.) {
3522                             t[12] = apt.multiply(swc[11]).multiply(plg[0][1].multiply(p[132]).add(1)).
3523                                     multiply(plg[1][2].multiply(p[52]).add(plg[1][4].multiply(p[98])).add(plg[1][6].multiply(p[67]))).
3524                                     multiply(lon.subtract(p[97]).multiply(DEG_TO_RAD).cos()).
3525                                     add(apt.multiply(swc[11] * swc[5] * cd14).
3526                                         multiply(plg[1][1].multiply(p[133]).add(plg[1][3].multiply(p[134])).add(plg[1][5].multiply(p[135]))).
3527                                         multiply(lon.subtract(p[136]).multiply(DEG_TO_RAD).cos())).
3528                                     add(apt.multiply(swc[12]).
3529                                         multiply(plg[0][1].multiply(p[55]).add(plg[0][3].multiply(p[56])).add(plg[0][5].multiply(p[57]))).
3530                                         multiply(sec.subtract(p[58]).multiply(SEC_TO_RAD).cos()));
3531                         }
3532                     } else {
3533                         t[12] = plg[0][1].multiply(p[120]).add(1).multiply(apdf * swc[11]).
3534                                 multiply(plg[1][2].multiply(p[60]).add(plg[1][4].multiply(p[61])).add(plg[1][6].multiply(p[62]))).
3535                                 multiply(lon.subtract(p[63]).multiply(DEG_TO_RAD).cos()).
3536                                 add(plg[1][1].multiply(p[115]).add(plg[1][3].multiply(p[116])).add(plg[1][5].multiply(p[117])).
3537                                     multiply(apdf * swc[11] * swc[5] * cd14).
3538                                     multiply(lon.subtract(p[118]).multiply(DEG_TO_RAD).cos())).
3539                                 add(plg[0][1].multiply(p[83]).add(plg[0][3].multiply(p[84])).add(plg[0][5].multiply(p[85])).
3540                                     multiply(apdf * swc[12]).
3541                                     multiply(sec.subtract(p[75]).multiply(SEC_TO_RAD).cos()));
3542                     }
3543                 }
3544             }
3545 
3546             // Sum all effects (params not used: 82, 89, 99, 139-149)
3547             T tinf = zero.newInstance(p[30]);
3548             for (int i = 0; i < 14; i++) {
3549                 tinf = tinf.add(t[i].multiply(FastMath.abs(sw[i + 1])));
3550             }
3551 
3552             // Return G(L)
3553             return tinf;
3554 
3555         }
3556 
3557         /** Calculate G(L) function with lower atmosphere parameters.
3558          *  @param p array of parameters
3559          *  @return G(L) value
3560          */
3561         private T glob7s(final double[] p) {
3562 
3563             final T[] t = MathArrays.buildArray(field, 14);
3564             final double cd32 = FastMath.cos(DAY_TO_RAD * (doy - p[31]));
3565             final double cd18 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[17]));
3566             final double cd14 = FastMath.cos(DAY_TO_RAD * (doy - p[13]));
3567             final double cd39 = FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[38]));
3568 
3569             // F10.7 effect
3570             t[0] = zero.newInstance(p[21] * (f107a - FLUX_REF));
3571 
3572             // Time independent
3573             t[1] =     plg[0][2].multiply(p[1]).
3574                    add(plg[0][4].multiply(p[2])).
3575                    add(plg[0][6].multiply(p[22])).
3576                    add(plg[0][1].multiply(p[26])).
3577                    add(plg[0][3].multiply(p[14])).
3578                    add(plg[0][5].multiply(p[59]));
3579 
3580             // Symmetrical annual
3581             t[2] = plg[0][2].multiply(p[47]).add(plg[0][4].multiply(p[29])).add(p[18]).multiply(cd32);
3582 
3583             // Symmetrical semiannual
3584             t[3] = plg[0][2].multiply(p[16]).add(plg[0][4].multiply(p[30])).add(p[15]).multiply(cd18);
3585 
3586             // Asymmetrical annual
3587             t[4] = plg[0][1].multiply(p[9]).add(plg[0][3].multiply(p[10])).add(plg[0][5].multiply(p[20])).multiply(cd14);
3588 
3589             // Asymmetrical semiannual
3590             t[5] = plg[0][1].multiply(p[37]).multiply(cd39);
3591 
3592             // Diurnal
3593             if (sw[7] != 0) {
3594                 final T t71 = plg[1][2].multiply(p[11]).multiply(cd14 * swc[5]);
3595                 final T t72 = plg[1][2].multiply(p[12]).multiply(cd14 * swc[5]);
3596                 t[6] =     plg[1][1].multiply(p[3]).add(plg[1][3].multiply(p[4])).add(t71).multiply(ctloc).
3597                        add(plg[1][1].multiply(p[6]).add(plg[1][3].multiply(p[7])).add(t72).multiply(stloc));
3598             }
3599 
3600             // Semidiurnal
3601             if (sw[8] != 0) {
3602                 final T t81 = plg[2][3].multiply(p[23]).add(plg[2][5].multiply(p[35])).multiply(cd14 * swc[5]);
3603                 final T t82 = plg[2][3].multiply(p[33]).add(plg[2][5].multiply(p[36])).multiply(cd14 * swc[5]);
3604                 t[7] =     plg[2][2].multiply(p[5]).add(plg[2][4].multiply(p[41])).add(t81).multiply(c2tloc).
3605                        add(plg[2][2].multiply(p[8]).add(plg[2][4].multiply(p[42])).add(t82).multiply(s2tloc));
3606             }
3607 
3608             // Terdiurnal
3609             if (sw[14] != 0) {
3610                 t[13] = plg[3][3].multiply(p[39]).multiply(s3tloc).add(plg[3][3].multiply(p[40]).multiply(c3tloc));
3611             }
3612 
3613             // Magnetic activity
3614             if (sw[9] == 1) {
3615                 t[8] = plg[0][2].multiply(p[45] * swc[2]).add(p[32]).multiply(apdf);
3616             } else if (sw[9] == -1) {
3617                 t[8] = plg[0][2].multiply(p[96] * swc[2]).add(p[50]).multiply(apt);
3618             }
3619 
3620             // Longitudinal
3621             if (!(sw[10] == 0 || sw[11] == 0)) {
3622                 final T lonr = lon.multiply(DEG_TO_RAD);
3623                 final FieldSinCos<T> scLonr = FastMath.sinCos(lonr);
3624                 t[10] = plg[0][1].multiply(p[80] * swc[5] * FastMath.cos(DAY_TO_RAD * (doy - p[81])) +
3625                                            p[85] * swc[6] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[86]))).
3626                        add(1.0 +
3627                            p[83] * swc[3] * FastMath.cos(DAY_TO_RAD * (doy - p[84])) +
3628                            p[87] * swc[4] * FastMath.cos(2.0 * DAY_TO_RAD * (doy - p[88]))).
3629                        multiply(    plg[1][2].multiply(p[64]).
3630                                 add(plg[1][4].multiply(p[65])).
3631                                 add(plg[1][6].multiply(p[66])).
3632                                 add(plg[1][1].multiply(p[74])).
3633                                 add(plg[1][3].multiply(p[75])).
3634                                 add(plg[1][5].multiply(p[76])).multiply(scLonr.cos()).
3635                           add(      plg[1][2].multiply(p[90]).
3636                                 add(plg[1][4].multiply(p[91])).
3637                                 add(plg[1][6].multiply(p[92])).
3638                                 add(plg[1][1].multiply(p[77])).
3639                                 add(plg[1][3].multiply(p[78])).
3640                                 add(plg[1][5].multiply(p[79])).multiply(scLonr.sin())));
3641             }
3642 
3643             // Sum all effects
3644             T gl = zero;
3645             for (int i = 0; i < 14; i++) {
3646                 gl = gl.add(t[i].multiply(FastMath.abs(sw[i + 1])));
3647             }
3648 
3649             // Return G(L)
3650             return gl;
3651         }
3652 
3653         /** Implements sg0 function (Eq. A24a).
3654          * @param ex ex
3655          * @param p24 abs(p[24])
3656          * @param p25 p[25]
3657          * @return sg0
3658          */
3659         private T sg0(final T ex, final double p24, final double p25) {
3660             final double g01 = g0(ap[1], p24, p25);
3661             final double g02 = g0(ap[2], p24, p25);
3662             final double g03 = g0(ap[3], p24, p25);
3663             final double g04 = g0(ap[4], p24, p25);
3664             final double g05 = g0(ap[5], p24, p25);
3665             final double g06 = g0(ap[6], p24, p25);
3666             final T ex2      = ex.square();
3667             final T ex3      = ex.multiply(ex2);
3668             final T ex4      = ex2.square();
3669             final T ex8      = ex4.square();
3670             final T ex12     = ex4.multiply(ex8);
3671             final T g234     = ex.multiply(g02).add(ex2.multiply(g03)).add(ex3.multiply(g04));
3672             final T g56      = ex4.multiply(g05).add(ex12.multiply(g06));
3673             final T ex19     = ex3.multiply(ex4).multiply(ex12);
3674             final T omex     = ex.negate().add(1);
3675             final T sumex    = ex19.negate().add(1).divide(omex).multiply(ex.sqrt()).add(1);
3676             return ex8.negate().add(1).multiply(g56).divide(omex).add(g234).add(g01).divide(sumex);
3677         }
3678 
3679         /** Implements go function (Eq. A24d).
3680          * @param apI 3 hrs ap
3681          * @param p24 abs(p[24])
3682          * @param p25 p[25]
3683          * @return go
3684          */
3685         private double g0(final double apI, final double p24, final double p25) {
3686             final double am4 = apI - 4.0;
3687             return am4 + (p25 - 1.0) * (am4 + (FastMath.exp(-p24 * am4) - 1.0) / p24);
3688         }
3689 
3690         /** Calculates chemistry/dissociation correction for MSIS models.
3691          * @param alt altitude
3692          * @param r target ratio
3693          * @param h1 transition scale length
3694          * @param zh altitude of 1/2 R
3695          * @return correction
3696          */
3697         private T ccor(final T alt, final T r, final double h1, final double zh) {
3698             final T e = alt.subtract(zh).divide(h1);
3699             if (e.getReal() > 70.) {
3700                 return field.getOne();
3701             } else if (e.getReal() < -70.) {
3702                 return r.exp();
3703             } else {
3704                 return r.divide(e.exp().add(1)).exp();
3705             }
3706         }
3707 
3708 
3709         /** Calculates O & O2 chemistry/dissociation correction for MSIS models.
3710          * @param alt altitude
3711          * @param r target ratio
3712          * @param h1 transition scale length
3713          * @param zh altitude of 1/2 R
3714          * @param h2 transition scale length
3715          * @return correction
3716          */
3717         private T ccor2(final T alt, final double r, final double h1, final double zh, final double h2) {
3718             final T e1 = alt.subtract(zh).divide(h1);
3719             final T e2 = alt.subtract(zh).divide(h2);
3720             if (e1.getReal() > 70. || e2.getReal() > 70.) {
3721                 return field.getOne();
3722             } else if (e1.getReal() < -70. && e2.getReal() < -70.) {
3723                 return zero.newInstance(FastMath.exp(r));
3724             } else {
3725                 final T ex1 = e1.exp();
3726                 final T ex2 = e2.exp();
3727                 return ex1.add(ex2).multiply(0.5).add(1).reciprocal().multiply(r).exp();
3728             }
3729         }
3730 
3731         /** Calculates scale height.
3732          * @param alt altitude
3733          * @param xm species molecular weight
3734          * @param temp temperature
3735          * @return scale height (km)
3736          */
3737         private T scalh(final double alt, final double xm, final double temp) {
3738             // Gravity at altitude
3739             final T denom = rlat.reciprocal().multiply(alt).add(1);
3740             final T galt = glat.divide(denom.square());
3741             return galt.reciprocal().multiply(R_GAS * temp / xm);
3742         }
3743 
3744         /** Calculates turbopause correction for MSIS models.
3745          * @param dd diffusive density
3746          * @param dm full mixed density
3747          * @param zhm transition scale length
3748          * @param xmm full mixed molecular weight
3749          * @param xm species molecular weight
3750          * @return combined density
3751          */
3752         private T dnet(final T dd, final T dm, final double zhm, final double xmm, final double xm) {
3753             if (!(dm.getReal() > 0 && dd.getReal() > 0)) {
3754                 T ddd = dd;
3755                 if (dd.getReal() == 0 && dm.getReal() == 0) {
3756                     ddd = field.getOne();
3757                 }
3758                 if (dm.getReal() == 0) {
3759                     return ddd;
3760                 }
3761                 if (dd.getReal() == 0) {
3762                     return dm;
3763                 }
3764             }
3765 
3766             final double a  = zhm / (xmm - xm);
3767             final T ylog = dm.divide(dd).log().multiply(a);
3768             if (ylog.getReal() < -10.) {
3769                 return dd;
3770             } else if (ylog.getReal() > 10.) {
3771                 return dm;
3772             } else {
3773                 return ylog.exp().add(1).pow(1.0 / a).multiply(dd);
3774             }
3775         }
3776 
3777         /** Integrate cubic spline function from xa[0] to x.
3778          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3779          * @param xa array of abscissas in ascending order
3780          * @param ya array of ordinates in ascending order by xa
3781          * @param y2a array of second derivatives in ascending order by xa
3782          * @param x abscissa end point
3783          * @return integral value
3784          */
3785         private T splini(final T[] xa, final T[] ya, final T[] y2a, final T x) {
3786             final int n = xa.length;
3787             T yi = zero;
3788             int klo = 0;
3789             int khi = 1;
3790             while (x.getReal() > xa[klo].getReal() && khi < n) {
3791                 T xx = x;
3792                 if (khi < n - 1) {
3793                     xx = (x.getReal() < xa[khi].getReal()) ? x : xa[khi];
3794                 }
3795                 final T h = xa[khi].subtract(xa[klo]);
3796                 final T a = xa[khi].subtract(xx).divide(h);
3797                 final T b = xx.subtract(xa[klo]).divide(h);
3798                 final T a2 = a.square();
3799                 final T b2 = b.square();
3800 
3801                 final T z =
3802                            a2.divide(2).subtract(a2.square().add(1).divide(4)).multiply(y2a[klo]).
3803                            add(b2.multiply(b2).divide(4).subtract(b2.divide(2)).multiply(y2a[khi]));
3804                 yi = yi.add(    a2.negate().add(1).multiply(ya[klo]).divide(2).
3805                             add(b2.multiply(ya[khi]).divide(2)).
3806                             add(z.multiply(h).multiply(h).divide(6)).
3807                             multiply(h));
3808                 klo++;
3809                 khi++;
3810             }
3811             return yi;
3812         }
3813 
3814         /** Calculate cubic spline interpolated value.
3815          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3816          * @param xa array of abscissas in ascending order
3817          * @param ya array of ordinates in ascending order by xa
3818          * @param y2a array of second derivatives in ascending order by xa
3819          * @param x abscissa for interpolation
3820          * @return interpolated value
3821          */
3822         private T splint(final T[] xa, final T[] ya, final T[] y2a, final T x) {
3823             final int n = xa.length;
3824             int klo = 0;
3825             int khi = n - 1;
3826             while (khi - klo > 1) {
3827                 final int k = (khi + klo) >>> 1;
3828                 if (xa[k].getReal() > x.getReal()) {
3829                     khi = k;
3830                 } else {
3831                     klo = k;
3832                 }
3833             }
3834             final T h = xa[khi].subtract(xa[klo]);
3835             final T a = xa[khi].subtract(x).divide(h);
3836             final T b = x.subtract(xa[klo]).divide(h);
3837             return a.multiply(ya[klo]).add(b.multiply(ya[khi])).
3838                    add((    a.square().multiply(a).subtract(a).multiply(y2a[klo]).
3839                         add(b.multiply(b).multiply(b).subtract(b).multiply(y2a[khi]))
3840                        ).multiply(h).multiply(h).divide(6));
3841         }
3842 
3843         /** Calculate 2nd derivatives of cubic spline interpolation function.
3844          * <p>ADAPTED FROM NUMERICAL RECIPES</p>
3845          * @param x array of abscissas in ascending order
3846          * @param y array of ordinates in ascending order by x
3847          * @param yp1 derivative at x[0] (2nd derivatives null if > 1E30)
3848          * @param ypn derivative at x[n-1] (2nd derivatives null if > 1E30)
3849          * @return array of second derivatives
3850          */
3851         private T[] spline(final T[] x, final T[] y, final T yp1, final T ypn) {
3852             final int n = x.length;
3853             final T[] y2 = MathArrays.buildArray(field, n);
3854             final T[] u  = MathArrays.buildArray(field, n);
3855 
3856             if (yp1.getReal() < 1e+30) {
3857                 y2[0] = zero.newInstance(-0.5);
3858                 final T dx = x[1].subtract(x[0]);
3859                 final T dy = y[1].subtract(y[0]);
3860                 u[0]  = dx.reciprocal().multiply(3.0).multiply(dy.divide(dx).subtract(yp1));
3861             }
3862             for (int i = 1; i < n - 1; i++) {
3863                 final T dx0m = x[i].subtract(x[i - 1]);
3864                 final T dy0m = y[i].subtract(y[i - 1]);
3865                 final T dxpm = x[i + 1].subtract(x[i - 1]);
3866                 final T dxp0 = x[i + 1].subtract(x[i]);
3867                 final T dyp0 = y[i + 1].subtract(y[i]);
3868                 final T sig = dx0m.divide(dxpm);
3869                 final T p = sig.multiply(y2[i - 1]).add(2.0);
3870                 y2[i] = sig.subtract(1.0).divide(p);
3871                 u[i] = dyp0.divide(dxp0).subtract(dy0m.divide(dx0m)).multiply(6).divide(dxpm).subtract(sig.multiply(u[i - 1])).divide(p);
3872             }
3873 
3874             double qn = 0;
3875             T un = zero;
3876             if (ypn.getReal() < 1e+30) {
3877                 final T dx12 = x[n - 1].subtract(x[n - 2]);
3878                 final T dy12 = y[n - 1].subtract(y[n - 2]);
3879                 qn = 0.5;
3880                 un = dx12.reciprocal().multiply(3.0).multiply(ypn.subtract(dy12.divide(dx12)));
3881             }
3882 
3883             y2[n - 1] = un.subtract(u[n - 2].multiply(qn)).divide(y2[n - 2].multiply(qn).add(1.0));
3884             for (int k = n - 2; k >= 0; k--) {
3885                 y2[k] = y2[k].multiply(y2[k + 1]).add(u[k]);
3886             }
3887 
3888             return y2;
3889 
3890         }
3891 
3892         /** Calculate Temperature and Density Profiles for lower atmosphere.
3893          * @param alt altitude
3894          * @param d0 density
3895          * @param xm mixed density
3896          * @return temperature or density profile
3897          */
3898         private T densm(final T alt, final T d0, final double xm) {
3899 
3900             T densm = d0;
3901 
3902             // stratosphere/mesosphere temperature
3903             int mn = ZN2.length;
3904             T z = (alt.getReal() > ZN2[mn - 1]) ? alt : zero.newInstance(ZN2[mn - 1]);
3905 
3906             double z1 = ZN2[0];
3907             double z2 = ZN2[mn - 1];
3908             T t1 = meso_tn2[0];
3909             T t2 = meso_tn2[mn - 1];
3910             T zg  = zeta(z, z1);
3911             T zgdif = zeta(zero.newInstance(z2), z1);
3912 
3913             /* set up spline nodes */
3914             T[] xs = MathArrays.buildArray(field, mn);
3915             T[] ys = MathArrays.buildArray(field, mn);
3916             for (int k = 0; k < mn; k++) {
3917                 xs[k] = zeta(zero.newInstance(ZN2[k]), z1).divide(zgdif);
3918                 ys[k] = meso_tn2[k].reciprocal();
3919             }
3920             final T qSM = rlat.add(z2).divide(rlat.add(z1));
3921             T yd1 = meso_tgn2[0].negate().divide(t1.square()).multiply(zgdif);
3922             T yd2 = meso_tgn2[1].negate().divide(t2.square()).multiply(zgdif).multiply(qSM.square());
3923 
3924             /* calculate spline coefficients */
3925             T[] y2out = spline(xs, ys, yd1, yd2);
3926             T x = zg.divide(zgdif);
3927             T y = splint(xs, ys, y2out, x);
3928 
3929             /* temperature at altitude */
3930             T tz = y.reciprocal();
3931 
3932             if (xm != 0.0) {
3933                 /* calculate stratosphere / mesospehere density */
3934                 final T glb  = galt(zero.newInstance(z1));
3935                 final T gamm = glb.multiply(zgdif).multiply(xm / R_GAS);
3936 
3937                 /* Integrate temperature profile */
3938                 final T yi = splini(xs, ys, y2out, x);
3939                 final T expl = min(MIN_TEMP, gamm.multiply(yi));
3940 
3941                 /* Density at altitude */
3942                 densm = densm.multiply(t1.divide(tz).multiply(expl.negate().exp()));
3943             }
3944 
3945             if (alt.getReal() > ZN3[0]) {
3946                 return (xm == 0.0) ? tz : densm;
3947             }
3948 
3949             // troposhere/stratosphere temperature
3950             z = alt;
3951             mn = ZN3.length;
3952             z1 = ZN3[0];
3953             z2 = ZN3[mn - 1];
3954             t1 = meso_tn3[0];
3955             t2 = meso_tn3[mn - 1];
3956             zg = zeta(z, z1);
3957             zgdif = zeta(zero.newInstance(z2), z1);
3958 
3959             /* set up spline nodes */
3960             xs = MathArrays.buildArray(field, mn);
3961             ys = MathArrays.buildArray(field, mn);
3962             for (int k = 0; k < mn; k++) {
3963                 xs[k] = zeta(zero.newInstance(ZN3[k]), z1).divide(zgdif);
3964                 ys[k] = meso_tn3[k].reciprocal();
3965             }
3966             final T qTS = rlat.add(z2) .divide(rlat.add(z1));
3967             yd1 = meso_tgn3[0].negate().divide(t1.multiply(t1)).multiply(zgdif);
3968             yd2 = meso_tgn3[1].negate().divide(t2.multiply(t2)).multiply(zgdif).multiply(qTS).multiply(qTS);
3969 
3970             /* calculate spline coefficients */
3971             y2out = spline(xs, ys, yd1, yd2);
3972             x = zg.divide(zgdif);
3973             y = splint(xs, ys, y2out, x);
3974 
3975             /* temperature at altitude */
3976             tz = y.reciprocal();
3977 
3978             if (xm != 0.0) {
3979                 /* calculate tropospheric / stratosphere density */
3980                 final T glb = galt(zero.newInstance(z1));
3981                 final T gamm = glb.multiply(zgdif).multiply(xm / R_GAS);
3982 
3983                 /* Integrate temperature profile */
3984                 final T yi = splini(xs, ys, y2out, x);
3985                 final T expl = min(MIN_TEMP, gamm.multiply(yi));
3986 
3987                 /* Density at altitude */
3988                 densm = densm.multiply(t1.divide(tz).multiply(expl.negate().exp()));
3989             }
3990 
3991             return (xm == 0.0) ? tz : densm;
3992         }
3993 
3994         /** Calculate temperature and density profiles according to new lower thermo polynomial.
3995          * @param alt altitude
3996          * @param dlb density at lower boundary
3997          * @param tinf exospheric temperature
3998          * @param tlb temperature at lower boundary
3999          * @param xm species molecular weight
4000          * @param alpha thermal diffusion coefficient
4001          * @param zlb altitude of the lower boundary
4002          * @param s2 slope
4003          * @return temperature or density profile
4004          */
4005         private T densu(final T alt, final T dlb, final T tinf,
4006                         final T tlb, final double xm,  final double alpha,
4007                         final double zlb, final T s2) {
4008             /* joining altitudes of Bates and spline */
4009             T z = (alt.getReal() > ZN1[0]) ? alt : zero.newInstance(ZN1[0]);
4010 
4011             /* geopotential altitude difference from ZLB */
4012             final T zg2 = zeta(z, zlb);
4013 
4014             /* Bates temperature */
4015             final T tt = tinf.subtract(tinf.subtract(tlb).multiply(s2.negate().multiply(zg2).exp()));
4016             final T ta = tt;
4017             T tz = tt;
4018 
4019             final int mn = ZN1.length;
4020             final T[] xs = MathArrays.buildArray(field, mn);
4021             final T[] ys = MathArrays.buildArray(field, mn);
4022             T x = zero;
4023             T[] y2out =  MathArrays.buildArray(field, mn);
4024             T zgdif = zero;
4025             if (alt.getReal() < ZN1[0]) {
4026                 /* calculate temperature below ZA
4027                  * temperature gradient at ZA from Bates profile */
4028                 final T p = rlat.add(zlb).divide(rlat.add(ZN1[0]));
4029                 final T dta = tinf.subtract(ta).multiply(s2).multiply(p.square());
4030                 meso_tgn1[0] = dta;
4031                 meso_tn1[0] = ta;
4032                 final T tzn1mn1 = zero.newInstance(ZN1[mn - 1]);
4033                 z = (alt.getReal() > ZN1[mn - 1]) ? alt : tzn1mn1;
4034 
4035                 final T t1 = meso_tn1[0];
4036                 final T t2 = meso_tn1[mn - 1];
4037                 /* geopotental difference from z1 */
4038                 final T zg = zeta(z, ZN1[0]);
4039                 zgdif = zeta(tzn1mn1, ZN1[0]);
4040                 /* set up spline nodes */
4041                 for (int k = 0; k < mn; k++) {
4042                     xs[k] = zeta(zero.newInstance(ZN1[k]), ZN1[0]).divide(zgdif);
4043                     ys[k] =  meso_tn1[k].reciprocal();
4044                 }
4045                 /* end node derivatives */
4046                 final T q   = rlat.add(ZN1[mn - 1]).divide(rlat.add(ZN1[0]));
4047                 final T yd1 = meso_tgn1[0].negate().divide(t1.square()).multiply(zgdif);
4048                 final T yd2 = meso_tgn1[1].negate().divide(t2.square()).multiply(zgdif).multiply(q.square());
4049                 /* calculate spline coefficients */
4050                 y2out = spline(xs, ys, yd1, yd2);
4051                 x = zg.divide(zgdif);
4052                 final T y = splint(xs, ys, y2out, x);
4053                 /* temperature at altitude */
4054                 tz = y.reciprocal();
4055             }
4056 
4057             if (xm == 0) {
4058                 return tz;
4059             }
4060 
4061             /* calculate density above za */
4062             T glb   = galt(zero.newInstance(zlb));
4063             T gamma = glb.divide(s2.multiply(tinf)).multiply(xm / R_GAS);
4064             T expl = tt.getReal() <= 0 ?
4065                      zero.newInstance(MIN_TEMP) :
4066                      min(MIN_TEMP, s2.negate().multiply(gamma).multiply(zg2).exp());
4067             T densu = dlb.multiply(expl).multiply(tlb.divide(tt).pow(gamma.add(alpha + 1)));
4068 
4069             // Correction for issue 1365 - protection against "densu" being infinite
4070             if (!Double.isFinite(densu.getReal())) {
4071                 if (expl.getReal() < MIN_TEMP) {
4072                     densu = dlb.multiply(FastMath.exp((FastMath.log(tlb.divide(tt)).multiply(gamma.add(alpha + 1))).
4073                                                       subtract(s2.multiply(gamma).multiply(zg2))));
4074                 } else {
4075                     throw new OrekitException(OrekitMessages.INFINITE_NRLMSISE00_DENSITY);
4076                 }
4077             }
4078 
4079             /* calculate density below za */
4080             if (alt.getReal() < ZN1[0]) {
4081                 glb   = galt(zero.newInstance(ZN1[0]));
4082                 gamma = glb.multiply(zgdif).multiply(xm / R_GAS);
4083                 /* integrate spline temperatures */
4084                 expl = tz.getReal() <= 0 ?
4085                        zero.newInstance(MIN_TEMP) :
4086                        min(MIN_TEMP, gamma.multiply(splini(xs, ys, y2out, x)));
4087                 /* correct density at altitude */
4088                 densu = densu.multiply(meso_tn1[0].divide(tz).pow(alpha + 1).multiply(expl.negate().exp()));
4089             }
4090 
4091             /* Return density at altitude */
4092             return densu;
4093         }
4094 
4095         /** Compute min of two values, one double and one field element.
4096          * @param d double value
4097          * @param f field element
4098          * @return min value
4099          */
4100         private T min(final double d, final T f) {
4101             return (f.getReal() > d) ? zero.newInstance(d) : f;
4102         }
4103 
4104         /** Calculate gravity at altitude.
4105          * @param alt altitude (km)
4106          * @return gravity at altitude (cm/s2)
4107          */
4108         private T galt(final T alt) {
4109             final T r = alt.divide(rlat).add(1);
4110             return glat.divide(r.square());
4111         }
4112 
4113         /** Calculate zeta function.
4114          * @param zz zz value
4115          * @param zl zl value
4116          * @return value of zeta function
4117          */
4118         private T zeta(final T zz, final double zl) {
4119             return zz.subtract(zl).multiply(rlat.add(zl)).divide(rlat.add(zz));
4120         }
4121 
4122     }
4123 
4124 }