Table 1(a). Comparison of models to drag, accelerometer, and rocket database on total mass density for quiet geomagnetic activity (Ap <= 10) Data Set* ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Jacchia 200 - 400 6236 -0.06 0.17 -0.06 0.17 -0.04 0.17 drag 400 - 800 10041 -0.07 0.23 -0.08 0.26 -0.07 0.25 800 -1200 5586 0.01 0.23 0.03 0.27 -0.05 0.23 >1200 15 0.20 0.09 0.27 0.10 -0.18 0.05 Barlier 120 - 200 2005 0.03 0.22 0.02 0.22 -0.07 0.22 drag 200 - 400 9343 0.04 0.21 0.04 0.20 0.03 0.22 400 - 800 2880 0.12 0.32 0.10 0.32 0.17 0.33 Cactus 200 - 400 52722 -0.05 0.13 -0.06 0.13 -0.09 0.16 accel 400 - 800 52179 -0.05 0.19 -0.04 0.19 -0.07 0.22 SETA 79 120 - 200 3792 0.03 0.07 0.06 0.07 -0.03 0.06 accel 200 - 400 4431 -0.04 0.17 -0.03 0.16 -0.04 0.17 SETA 82 120 - 200 51329 -0.02 0.08 -0.03 0.09 -0.12 0.08 accel 200 - 400 54765 0.01 0.13 0.02 0.14 0.00 0.14 SETA 83 120 - 200 44115 -0.08 0.08 -0.10 0.08 -0.17 0.08 accel 200 - 400 53888 -0.01 0.16 -0.04 0.16 -0.03 0.17 SETA 84 120 - 200 40585 -0.12 0.08 -0.16 0.09 -0.24 0.08 accel 200 - 400 57258 -0.09 0.43 -0.12 0.43 -0.11 0.44 San Marco-5 120 - 200 1882 0.37 0.15 0.29 0.16 0.37 0.15 accel 200 - 400 26070 0.18 0.20 0.14 0.19 0.19 0.30 400 - 800 4192 0.10 0.34 0.12 0.33 0.46 0.52 AE-C MESA 120 - 200 23145 0.10 0.17 0.12 0.18 0.00 0.19 accel 200 - 400 12433 0.03 0.30 0.03 0.30 -0.01 0.30 AE-D MESA 120 - 200 15767 0.01 0.15 -0.03 0.16 -0.01 0.15 accel 200 - 400 4427 -0.05 0.20 -0.08 0.20 -0.04 0.20 AE-E MESA 120 - 200 25461 0.04 0.12 0.01 0.12 -0.03 0.14 accel 200 - 400 15190 0.07 0.24 0.02 0.23 0.03 0.25 rocket 80 - 120 233 -0.04 0.16 -0.05 0.17 -0.12 0.19 grenade rocket 80 - 120 161 0.17 0.23 0.16 0.24 0.02 0.28 gauge rocket drag 80 - 120 135 0.03 0.19 0.05 0.17 -0.02 0.19 (sphere) shuttle 80 - 120 61 -0.05 0.20 0.00 0.21 -0.11 0.16 accel 120 - 200 30 0.16 0.24 0.21 0.22 -0.08 0.23 * Complete drag and accelerometer data sets used for calculations Table 1(b). Comparison of models to drag, accelerometer, and rocket database on total mass density for high geomagnetic activity (Ap >= 50) Data Set* ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Jacchia 200 - 400 304 -0.05 0.23 -0.07 0.23 -0.12 0.25 drag 400 - 800 441 -0.01 0.36 0.01 0.39 -0.17 0.42 800 -1200 282 0.07 0.35 0.05 0.39 -0.14 0.39 Barlier 120 - 200 83 -0.09 0.19 -0.10 0.20 -0.12 0.20 drag 200 - 400 323 -0.11 0.22 -0.14 0.25 -0.13 0.23 400 - 800 105 -0.12 0.47 -0.14 0.49 -0.18 0.48 Cactus 200 - 400 11497 0.04 0.20 0.04 0.19 -0.09 0.18 accel 400 - 800 4336 0.06 0.31 0.08 0.31 -0.15 0.29 SETA 79 120 - 200 4310 -0.01 0.11 0.01 0.11 0.01 0.09 accel 200 - 400 4382 -0.08 0.14 -0.07 0.14 -0.03 0.15 SETA 82 120 - 200 21619 -0.04 0.12 -0.10 0.14 -0.06 0.13 accel 200 - 400 39907 -0.06 0.15 -0.10 0.18 -0.06 0.14 SETA 83 120 - 200 14664 -0.08 0.09 -0.09 0.08 -0.10 0.09 accel 200 - 400 26103 -0.01 0.13 -0.04 0.14 0.00 0.13 SETA 84 120 - 200 4848 -0.03 0.12 -0.10 0.10 -0.17 0.10 accel 200 - 400 14799 0.04 0.52 0.01 0.55 -0.03 0.52 San Marco-5 200 - 400 366 0.29 0.14 0.28 0.14 0.45 0.15 accel 400 - 800 16 -0.24 0.41 -0.18 0.41 -0.03 0.41 AE-C MESA 120 - 200 4304 0.19 0.27 0.21 0.28 0.17 0.28 accel 200 - 400 1653 0.02 0.97 0.00 0.96 -0.05 0.97 AE-D MESA 120 - 200 199 0.25 0.13 0.15 0.12 0.19 0.14 accel 200 - 400 41 0.07 0.12 0.01 0.11 0.01 0.13 AE-E MESA 120 - 200 473 0.09 0.14 0.17 0.15 0.12 0.21 accel 200 - 400 133 0.13 0.38 0.14 0.39 0.10 0.36 rocket 80 - 120 2 -0.22 0.01 -0.27 0.02 -0.27 0.02 grenade rocket 80 - 120 12 0.49 0.12 0.31 0.10 0.24 0.10 gauge rocket drag 80 - 120 2 0.25 0.01 0.27 0.00 0.20 0.01 (sphere) * Complete drag and accelerometer data sets used for calculations Table 1(c). Comparison of models to drag, accelerometer, and rocket database on total mass density across all geomagnetic activity levels Data Set* ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Jacchia 200 - 400 10456 -0.07 0.17 -0.06 0.17 -0.07 0.19 drag 400 - 800 16021 -0.08 0.25 -0.07 0.27 -0.09 0.28 800 -1200 9373 0.01 0.24 0.04 0.27 -0.07 0.25 >1200 24 0.22 0.12 0.30 0.11 -0.20 0.13 Barlier 120 - 200 3285 0.01 0.22 0.00 0.23 -0.08 0.22 drag 200 - 400 14782 0.01 0.21 0.01 0.21 0.00 0.22 400 - 800 4560 0.07 0.31 0.08 0.32 0.11 0.33 Cactus 200 - 400 52504 -0.05 0.14 -0.04 0.13 -0.09 0.17 accel 400 - 800 55760 -0.05 0.20 -0.01 0.20 -0.10 0.25 SETA 79 120 - 200 30611 0.01 0.10 0.04 0.09 0.00 0.09 accel 200 - 400 32067 -0.07 0.15 -0.05 0.14 -0.04 0.16 SETA 82 120 - 200 48445 -0.04 0.10 -0.06 0.11 -0.10 0.10 accel 200 - 400 51652 -0.03 0.14 -0.04 0.15 -0.04 0.14 SETA 83 120 - 200 57350 -0.08 0.09 -0.10 0.09 -0.15 0.09 accel 200 - 400 54761 -0.01 0.16 -0.04 0.16 -0.02 0.17 SETA 84 120 - 200 56816 -0.12 0.09 -0.16 0.09 -0.22 0.09 accel 200 - 400 44984 -0.09 0.40 -0.11 0.42 -0.11 0.42 San Marco-5 120 - 200 2935 0.35 0.13 0.29 0.14 0.34 0.14 accel 200 - 400 41076 0.20 0.18 0.17 0.17 0.22 0.29 400 - 800 7285 0.10 0.32 0.13 0.32 0.32 0.51 AE-C MESA 120 - 200 54353 0.11 0.17 0.14 0.17 0.06 0.19 accel 200 - 400 35841 0.03 0.29 0.03 0.30 -0.01 0.30 AE-D MESA 120 - 200 28499 0.01 0.16 -0.03 0.15 -0.01 0.15 accel 200 - 400 8170 -0.05 0.20 -0.07 0.20 -0.04 0.20 AE-E MESA 120 - 200 43798 0.05 0.12 0.03 0.13 -0.02 0.15 accel 200 - 400 24982 0.08 0.24 0.05 0.24 0.04 0.25 rocket 80 - 120 310 -0.02 0.16 -0.03 0.16 -0.11 0.18 grenade rocket 80 - 120 247 0.21 0.24 0.20 0.25 0.07 0.27 gauge rocket drag 80 - 120 201 0.06 0.31 0.09 0.27 -0.01 0.28 (sphere) shuttle 80 - 120 138 -0.07 0.19 0.00 0.20 -0.11 0.17 accel 120 - 200 52 0.07 0.23 0.13 0.21 -0.11 0.21 * Complete drag and accelerometer data sets used for calculations Table 2(a). Comparison of models to temperature database for quiet levels of geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Arecibo 120 - 200 20 5.12 78.23 -2.87 82.36 9.85 74.93 ISR 200 - 400 32 24.09 44.19 27.60 44.91 20.63 43.72 400 - 799 42 72.16 94.17 79.40 94.31 75.17 91.21 Tex* 110 31.69 41.19 33.69 39.46 53.17 70.50 Tex** 186 -1.46 37.93 -3.86 38.90 -16.72 70.66 Tex*** 1645 1.50 43.67 -1.84 41.27 -31.96 70.78 Millstone 100 - 130‡ 2498 -0.88 45.56 -3.34 43.58 4.57 50.76 Hill Tex† 287 41.01 50.81 25.41 48.65 55.51 78.11 ISR Tex†† 232 -3.94 46.00 -30.15 47.06 -30.77 83.15 Tex††† 3082 3.70 47.74 -16.68 50.41 -9.50 84.09 St. Santin Tex 303 6.15 44.78 -12.72 45.41 11.95 80.46 ISR Jicamarca Tex 33 -36.21 48.46 -35.25 48.81 -28.82 66.62 ISR Malvern 200 - 400 84 -16.24 67.98 -32.77 66.94 37.10 78.07 ISR AE-C NATE 120 - 200 219 -39.52 111.18 -44.33 113.93 -10.61 111.94 NMS 200 - 400 212 -37.12 105.89 -41.93 107.78 -9.05 110.01 AE-D NATE 120 - 200 185 -28.58 103.34 -30.22 106.56 -12.58 107.63 NMS 200 - 400 217 -23.84 94.36 -26.24 94.36 7.69 107.97 AE-E NATE 120 - 200 329 -22.66 50.93 -29.09 52.23 -10.31 57.84 NMS 200 - 400 1003 -36.07 69.99 -32.18 70.39 -24.35 78.65 Rocket 120 - 200 140 -7.83 52.33 -5.79 55.20 11.39 59.69 NMS 200 - 400 82 -25.98 65.35 -32.61 69.22 0.52 59.28 DE-2 WATS 200 - 400 1723 -2.38 110.07 -21.19 109.37 -32.02 134.02 NMS 400 - 800 868 15.43 134.32 -4.14 133.26 -33.12 160.76 * Prior to 1985 (Data used to generate MSISE-90, NRLMSISE-00) ** 1985-95 (Data used to generate NRLMSISE-00) *** 1985-95 (Entire new data set) † Prior to 1981 (Data used to generate MSISE-90, NRLMSISE-00) †† 1981-97 (Data used to generate NRLMSISE-00) ††† 1981-97 (Entire new data set) ‡ 1988-97 (LTCS 2-15: Concharenko and Salah [1998]) Table 2(b). Comparison of models to temperature database for high geomagnetic activity (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Arecibo 120 - 200 12 -37.51 75.25 -45.49 72.28 -86.99 66.17 ISR 200 - 400 8 12.16 27.86 12.98 24.93 -22.05 41.96 400 - 799 8 1.55 48.31 13.96 46.43 -70.11 55.65 Tex** 25 1.61 46.99 12.93 46.08 -43.05 56.16 Tex*** 109 8.68 43.36 18.66 43.96 -60.08 56.61 Millstone 100 - 130†† 97 -19.24 54.54 -19.18 49.92 -2.20 62.75 Hill Tex† 10 33.34 48.20 44.33 36.52 -6.35 57.86 ISR Tex†† 130 3.83 121.84 -41.76 149.71 12.83 140.34 Tex††† 456 0.45 114.99 -46.39 138.81 10.31 125.38 St. Santin Tex 68 -21.43 79.14 -24.68 80.20 -66.08 88.88 ISR Malvern 200 - 400 7 -48.84 83.52 -51.66 84.04 -21.08 80.30 ISR AE-C NATE 120 - 200 62 -37.87 83.71 -40.82 83.71 -7.57 80.37 NMS 200 - 400 60 -232.70 259.42 -239.63 281.59 -248.31 266.39 AE-D NATE 120 - 200 14 23.31 46.07 49.94 42.61 48.59 65.00 NMS 200 - 400 25 -22.25 93.83 -19.14 100.11 118.77 113.96 AE-E NATE 120 - 200 25 -28.85 39.79 -32.13 40.37 -37.16 41.07 NMS 200 - 400 103 -90.40 152.53 -86.75 155.48 -144.90 157.64 DE-2 WATS 200 - 400 337 -457.87 602.70 -470.71 600.32 -395.19 531.19 NMS 400 - 800 190 -22.90 169.04 -37.49 173.60 43.21 189.20 * Prior to 1985 (Data used to generate MSISE-90, NRLMSISE-00) ** 1985-95 (Data used to generate NRLMSISE-00) *** 1985-95 (Entire new data set) † Prior to 1981 (Data used to generate MSISE-90, NRLMSISE-00) †† 1981-97 (Data used to generate NRLMSISE-00) ††† 1981-97 (Entire new data set) ‡ 1988-97 (LTCS 2-15: Concharenko and Salah [1998]) Table 2(c). Comparison of models to temperature database across all levels of geomagnetic activity Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD Arecibo 120 - 200 55 3.28 80.48 -3.46 83.86 -9.39 87.31 ISR 200 - 400 98 26.28 42.01 28.99 41.97 18.82 51.88 400 - 799 101 44.97 80.91 58.03 79.32 37.90 89.82 Tex* 172 31.12 46.28 36.19 45.19 34.79 79.02 Tex** 411 2.87 37.57 5.12 38.67 -26.29 67.73 Tex*** 3882 2.87 42.04 4.40 41.44 -44.64 70.79 Millstone 100 - 130‡ 5352 -1.54 46.02 -2.70 44.57 11.53 52.27 Hill Tex† 559 41.35 58.15 30.50 54.37 51.30 87.22 ISR Tex†† 583 -2.89 59.14 -24.72 67.77 -20.90 94.93 Tex††† 6459 4.76 55.74 -11.90 60.29 -4.27 88.18 St. Santin Tex 642 -1.48 47.26 -16.83 46.67 -2.88 86.92 ISR Jicamarca Tex 52 -26.93 53.90 -24.84 54.29 -38.47 80.54 ISR Malvern 200 - 400 170 -20.82 71.20 -32.21 70.36 22.85 86.92 ISR AE-C NATE 120 - 200 598 -39.19 101.03 -42.19 102.61 -7.73 101.78 NMS 200 - 400 571 -72.89 117.05 -73.10 118.07 -49.73 127.07 AE-D NATE 120 - 200 345 -26.49 96.02 -24.62 99.18 -5.34 101.72 NMS 200 - 400 437 -31.81 101.96 -28.17 101.61 10.90 124.55 AE-E NATE 120 - 200 664 -17.46 63.78 -22.81 63.88 -10.82 69.29 NMS 200 - 400 2158 -33.18 70.69 -27.12 71.60 -34.88 81.97 Rocket 120 - 200 185 -6.70 55.47 -6.02 60.40 4.44 63.49 NMS 200 - 400 111 -17.05 79.76 -23.69 84.06 2.30 78.43 DE-2 WATS 120 - 200 13 -76.32 548.69 -91.71 549.02 -24.64 523.71 NMS 200 - 400 4217 -20.49 143.93 -31.02 143.27 -36.83 165.84 400 - 800 2213 5.37 142.22 -5.85 142.15 -19.93 169.57 * Prior to 1985 (Data used to generate MSISE-90, NRLMSISE-00) ** 1985-95 (Data used to generate NRLMSISE-00) *** 1985-95 (Entire new data set) † Prior to 1981 (Data used to generate MSISE-90, NRLMSISE-00) †† 1981-97 (Data used to generate NRLMSISE-00) ††† 1981-97 (Entire new data set) ‡ 1988-97 (LTCS 2-15: Concharenko and Salah [1998]) Table 3(a). Comparison of models to database on N2 concentration for quiet geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 109* 0.09 0.16 0.11 0.16 0.10 0.16 NMS 200 - 400 14018* 0.10 0.31 0.08 0.31 0.22 0.45 400 - 800 4531* 0.24 0.53 0.17 0.53 0.90 0.79 OGO-6 200 - 400 69 0.11 0.17 0.01 0.16 -0.05 0.26 NMS 400 - 800 1849 0.14 0.25 0.06 0.25 0.49 0.63 San Marco-3 120 - 200 9 0.05 0.12 -0.01 0.11 -0.04 0.14 NMS 200 - 400 76 0.14 0.25 0.07 0.25 0.14 0.28 St. Santin 80 - 120 272 -0.07 0.43 -0.05 0.45 -0.23 0.40 ISR Arecibo 80 - 120 211 -0.17 0.27 -0.17 0.27 -0.22 0.23 ISR AE-C NATE 120 - 200 10 -0.24 0.12 -0.14 0.10 -0.20 0.16 NMS 200 - 400 1726 0.09 0.31 0.05 0.31 0.40 0.56 400 - 800 234 0.26 0.40 0.18 0.39 1.08 0.69 AE-C OSS 120 - 200 479 -0.06 0.15 -0.03 0.15 0.00 0.19 NMS 200 - 400 949 -0.01 0.27 -0.04 0.27 0.16 0.38 AE-D OSS 120 - 200 266 -0.03 0.16 -0.06 0.16 0.01 0.18 NMS 200 - 400 238 -0.12 0.36 -0.17 0.37 0.02 0.50 AE-E NACE 120 - 200 610 0.00 0.18 -0.01 0.16 -0.03 0.20 NMS 200 - 400 1306 0.07 0.22 -0.01 0.22 -0.01 0.34 400 - 800 838 0.09 0.26 -0.04 0.25 -0.14 0.36 Rocket 120 - 200 1 0.32 0.00 0.27 0.00 0.13 0.00 UV occ Rocket 80 - 120 19 0.01 0.30 -0.02 0.30 -0.22 0.31 NMS 120 - 200 225 -0.08 0.30 -0.08 0.30 -0.18 0.29 200 - 400 87 -0.12 0.24 -0.11 0.25 -0.12 0.26 ESRO-4 200 - 400 1230 -0.12 0.31 -0.14 0.32 0.01 0.45 NMS DE-2 NACS 200 - 400 1955 -0.38 0.23 -0.41 0.23 -0.37 0.40 NMS 400 - 800 520 -0.26 0.45 -0.33 0.43 -0.19 0.64 EISCAT 80 - 120 23 -0.08 0.17 -0.04 0.21 -0.16 0.11 ISR Averages *Entire data set Table 3(b). Comparison of models to database on N2 concentration for high geomagnetic activity (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 200 - 400 3090* -0.22 0.86 -0.21 0.86 0.02 0.92 NMS 400 - 800 1016* -0.10 0.92 -0.09 0.94 0.52 1.30 OGO-6 200 - 400 9 0.09 0.23 0.04 0.22 -0.23 0.33 NMS 400 - 800 224 0.51 0.57 0.39 0.60 0.79 0.98 St. Santin 80 - 120 34 0.00 0.36 0.00 0.35 -0.17 0.31 ISR Arecibo 80 - 120 31 -0.25 0.18 -0.26 0.21 -0.29 0.19 ISR AE-C NATE 200 - 400 150 0.32 0.56 0.28 0.57 0.69 0.76 NMS 400 - 800 12 0.29 0.78 0.35 0.86 2.79 0.95 AE-C OSS 120 - 200 128 0.07 0.17 0.08 0.17 0.17 0.19 NMS 200 - 400 191 0.16 0.31 0.12 0.34 0.25 0.54 AE-D OSS 120 - 200 27 0.29 0.10 0.23 0.09 0.36 0.16 NMS 200 - 400 26 -0.05 0.23 -0.10 0.25 0.52 0.38 AE-E NACE 120 - 200 26 -0.01 0.16 0.08 0.15 -0.01 0.19 NMS 200 - 400 145 0.24 0.38 0.21 0.37 -0.13 0.39 400 - 800 54 0.24 0.20 0.18 0.20 -0.28 0.35 ESRO-4 200 - 400 231 0.08 0.33 0.07 0.36 0.26 0.50 NMS DE-2 NACS 200 - 400 570 -0.30 0.36 -0.36 0.36 -0.15 0.50 NMS 400 - 800 253 0.30 1.79 0.10 1.74 1.59 2.21 *Entire data set Table 3(c). Comparison of models to database on N2 concentration across all geomagnetic activity levels Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 130* 0.09 0.15 0.11 0.15 0.12 0.16 NMS 200 - 400 38352* 0.04 0.34 0.04 0.34 0.21 0.49 400 - 800 12342* 0.11 0.56 0.12 0.56 0.69 0.91 OGO-6 200 - 400 135 0.09 0.19 0.01 0.18 -0.11 0.34 NMS 400 - 800 3578 0.13 0.26 0.08 0.26 0.57 0.68 San Marco-3 120 - 200 16 -0.02 0.14 -0.07 0.14 -0.11 0.18 NMS 200 - 400 121 0.12 0.21 0.06 0.21 0.09 0.24 St. Santin 80 - 120 558 -0.08 0.41 -0.05 0.42 -0.23 0.38 ISR Arecibo 80 - 120 403 -0.17 0.28 -0.17 0.29 -0.23 0.25 ISR AE-C NATE 120 - 200 10 -0.23 0.12 -0.12 0.10 -0.20 0.16 NMS 200 - 400 3149 0.10 0.33 0.09 0.34 0.43 0.61 400 - 800 472 0.24 0.45 0.24 0.46 1.20 0.81 AE-C OSS 120 - 200 1180 -0.05 0.16 -0.02 0.17 0.02 0.21 NMS 200 - 400 2271 0.01 0.28 0.00 0.28 0.17 0.42 AE-D OSS 120 - 200 507 0.00 0.16 -0.04 0.16 0.05 0.18 NMS 200 - 400 462 -0.13 0.35 -0.15 0.37 0.10 0.61 AE-E NACE 120 - 200 1076 -0.01 0.19 -0.01 0.17 -0.03 0.21 NMS 200 - 400 2712 0.07 0.25 0.01 0.25 -0.07 0.35 400 - 800 1638 0.08 0.26 -0.02 0.26 -0.17 0.37 Rocket 120 - 200 2 0.02 0.26 0.02 0.23 -0.07 0.19 UV occ Rocket 80 - 120 32 -0.05 0.33 -0.08 0.35 -0.27 0.35 NMS 120 - 200 297 -0.06 0.30 -0.06 0.29 -0.16 0.29 200 - 400 116 -0.20 0.55 -0.19 0.55 -0.21 0.50 ESRO-4 200 - 400 2621 -0.10 0.32 -0.11 0.34 0.08 0.47 NMS DE-2 NACS 200 - 400 4971 -0.37 0.27 -0.39 0.26 -0.31 0.44 NMS 400 - 800 1544 -0.26 0.47 -0.32 0.47 -0.05 0.71 EISCAT 80 - 120 42 0.00 0.17 0.01 0.18 -0.16 0.14 ISR Averages *Entire data set Table 4(a). Comparison of models to database on total oxygen concentration (O+2O2)for quiet geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 114* 0.24 0.10 0.21 0.10 -0.13 0.11 NMS 200 - 400 12021* 0.13 0.24 0.14 0.25 0.00 0.29 400 - 800 8725* 0.12 0.37 0.11 0.37 0.16 0.38 OGO-6 200 - 400 67 0.06 0.12 0.06 0.11 0.12 0.15 NMS 400 - 600 1828 0.18 0.16 0.17 0.16 0.17 0.20 San Marco-3 120 - 200 21 -0.10 0.12 -0.13 0.11 -0.23 0.10 NMS 200 - 400 62 -0.04 0.16 -0.06 0.15 -0.09 0.17 AE-C NATE 200 - 400 1638 -0.09 0.18 -0.10 0.17 -0.15 0.22 NMS 400 - 600 272 -0.12 0.22 -0.15 0.20 -0.13 0.24 AE-C OSS 120 - 200 330 0.12 0.15 0.08 0.16 -0.15 0.24 NMS 200 - 400 873 0.05 0.24 0.04 0.24 -0.08 0.29 AE-D OSS 120 - 200 206 0.15 0.14 0.08 0.14 0.02 0.22 NMS 200 - 400 214 -0.03 0.25 -0.06 0.26 -0.11 0.31 AE-E NACE 120 - 200 292 -0.09 0.14 -0.12 0.13 -0.26 0.17 NMS 200 - 400 1411 -0.10 0.19 -0.11 0.19 -0.05 0.23 400 - 600 893 -0.15 0.18 -0.17 0.17 -0.08 0.18 ESRO-4 200 - 400 1263 -0.17 0.24 -0.17 0.24 -0.26 0.27 NMS DE-2 NACS 200 - 400 2090 -0.12 0.17 -0.12 0.16 -0.09 0.26 NMS 400 - 600 1381 -0.06 0.24 -0.09 0.24 -0.08 0.26 *Entire data set Table 4(b). Comparison of models to database on total oxygen concentration (O+2O2)for high geomagnetic activity levels (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 200 - 400 2096* 0.05 0.49 0.07 0.50 -0.10 0.60 NMS 400 - 800 1558* -0.12 0.50 -0.08 0.51 -0.18 0.56 OGO-6 200 - 400 12 -0.01 0.14 0.01 0.16 0.04 0.25 NMS 400 - 600 137 0.18 0.18 0.19 0.19 0.18 0.22 AE-C NATE 200 - 400 203 -0.06 0.32 -0.05 0.32 -0.19 0.41 NMS 400 - 600 13 -0.26 0.16 -0.29 0.13 -0.25 0.17 AE-C OSS 120 - 200 142 0.23 0.18 0.15 0.19 -0.05 0.28 NMS 200 - 400 169 0.12 0.30 0.11 0.31 -0.18 0.48 AE-D OSS 120 - 200 20 0.22 0.17 0.02 0.18 -0.05 0.26 NMS 200 - 400 10 0.08 0.19 0.00 0.20 -0.16 0.38 AE-E NACE 120 - 200 7 -0.06 0.16 -0.01 0.15 0.05 0.27 NMS 200 - 400 133 -0.04 0.32 -0.04 0.32 0.08 0.43 400 - 600 40 -0.10 0.20 -0.12 0.20 0.01 0.21 ESRO-4 200 - 400 234 -0.11 0.23 -0.11 0.23 -0.29 0.38 NMS DE-2 NACS 200 - 400 563 -0.16 0.23 -0.16 0.24 -0.29 0.39 NMS 400 - 600 389 -0.08 0.26 -0.08 0.27 -0.25 0.39 *Entire data set Table 4(c). Comparison of models to database on total oxygen concentration (O+2O2)across all geomagnetic activity levels Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 135* 0.23 0.10 0.21 0.10 -0.12 0.11 NMS 200 - 400 30941* 0.08 0.25 0.10 0.25 -0.07 0.34 400 - 800 22474* 0.01 0.38 0.04 0.38 0.03 0.43 OGO-6 200 - 400 156 0.01 0.14 0.01 0.14 0.05 0.21 NMS 400 - 600 3391 0.16 0.17 0.17 0.17 0.15 0.22 San Marco-3 120 - 200 31 -0.11 0.16 -0.14 0.14 -0.23 0.13 NMS 200 - 400 106 -0.05 0.14 -0.06 0.14 -0.09 0.16 AE-C NATE 200 - 400 3153 -0.09 0.19 -0.09 0.19 -0.16 0.25 NMS 400 - 600 521 -0.11 0.22 -0.12 0.21 -0.13 0.25 AE-C OSS 120 - 200 949 0.13 0.23 0.08 0.23 -0.14 0.29 NMS 200 - 400 2253 0.08 0.25 0.07 0.25 -0.08 0.33 AE-D OSS 120 - 200 392 0.14 0.14 0.05 0.15 -0.02 0.23 NMS 200 - 400 394 -0.03 0.24 -0.05 0.24 -0.14 0.32 AE-E NACE 120 - 200 545 -0.10 0.14 -0.13 0.13 -0.25 0.19 NMS 200 - 400 2851 -0.11 0.21 -0.11 0.21 -0.04 0.26 400 - 600 1730 -0.16 0.19 -0.17 0.18 -0.07 0.20 ESRO-4 200 - 400 2592 -0.15 0.25 -0.15 0.25 -0.27 0.32 NMS DE-2 NACS 200 - 400 5141 -0.13 0.17 -0.13 0.17 -0.14 0.30 NMS 400 - 600 3525 -0.08 0.23 -0.09 0.23 -0.12 0.28 *Entire data set Table 5(a). Comparison of models to database on helium concentration for quiet geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 96* 0.71 0.32 0.74 0.32 -0.45 0.37 NMS 200 - 400 11814* 0.24 0.32 0.22 0.32 -0.06 0.90 400 - 800 8543* 0.19 0.38 0.16 0.38 -0.13 0.79 OGO-6 200 - 400 35 0.20 0.15 0.18 0.15 0.25 0.38 NMS 400 - 800 1994 0.23 0.19 0.21 0.19 0.63 0.42 San Marco-3 120 - 200 13 0.45 0.27 0.44 0.28 0.06 0.19 NMS 200 - 400 91 0.15 0.21 0.14 0.22 -0.13 0.33 AE-C NATE 200 - 400 1706 -0.30 0.17 -0.32 0.18 -0.34 0.76 NMS 400 - 800 234 -0.29 0.18 -0.32 0.18 -0.02 0.73 AE-C OSS 120 - 200 339 -0.08 0.27 -0.08 0.28 -0.54 0.79 NMS 200 - 400 828 0.07 0.22 0.04 0.21 -0.29 0.92 AE-D OSS 120 - 200 192 -0.09 0.27 -0.12 0.27 -0.19 1.11 NMS 200 - 400 227 -0.23 0.38 -0.26 0.37 -0.24 1.25 AE-E NACE 120 - 200 257 0.12 0.22 0.10 0.22 -0.08 0.50 NMS 200 - 400 1416 -0.06 0.18 -0.07 0.18 -0.21 0.46 400 - 800 845 -0.08 0.19 -0.10 0.20 -0.14 0.41 ESRO-4 200 - 400 1119 -0.13 0.32 -0.14 0.31 -0.34 1.06 NMS DE-2 NACS 200 - 400 1971 -0.13 0.16 -0.13 0.16 -0.12 0.71 NMS 400 - 800 1844 -0.12 0.16 -0.14 0.16 -0.25 0.56 800 -1200 312 -0.06 0.20 -0.10 0.19 -0.28 0.39 *Entire data set Table 5(b). Comparison of models to database on helium concentration for high geomagnetic activity (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 200 - 400 2092* 0.31 0.95 0.28 0.95 -0.11 1.15 NMS 400 - 800 1566* 0.26 1.00 0.25 1.00 -0.18 1.11 OGO-6 200 - 400 13 0.03 0.09 0.02 0.12 0.45 0.41 NMS 400 - 800 140 1.40 1.49 1.41 1.50 1.82 1.39 AE-C NATE 200 - 400 174 -0.30 0.31 -0.32 0.31 -0.33 0.80 NMS 400 - 800 13 -0.30 0.23 -0.36 0.22 0.12 0.54 AE-C OSS 120 - 200 146 -0.06 0.45 -0.06 0.46 -0.60 0.89 NMS 200 - 400 202 -0.06 0.44 -0.08 0.46 -0.36 1.02 AE-D OSS 120 - 200 15 -0.08 0.31 -0.16 0.30 0.02 0.59 NMS 200 - 400 33 -0.20 0.31 -0.28 0.29 -0.17 0.65 AE-E NACE 120 - 200 8 0.17 0.12 0.16 0.12 0.79 0.26 NMS 200 - 400 131 -0.03 0.21 -0.06 0.20 0.20 0.49 400 - 800 49 -0.13 0.12 -0.15 0.13 0.02 0.28 ESRO-4 200 - 400 211 -0.17 0.34 -0.18 0.34 -0.40 0.76 NMS DE-2 NACS 200 - 400 496 -0.16 0.26 -0.17 0.26 -0.40 0.64 NMS 400 - 800 572 -0.13 0.29 -0.12 0.33 -0.45 0.61 800 -1200 44 -0.17 0.17 -0.19 0.18 -0.50 0.41 *Entire data set Table 5(c). Comparison of models to database on helium concentration across all geomagnetic activity levels Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 113* 0.72 0.31 0.76 0.31 -0.45 0.36 NMS 200 - 400 30166* 0.22 0.33 0.21 0.34 -0.16 0.89 400 - 800 21840* 0.16 0.38 0.14 0.38 -0.15 0.77 OGO-6 200 - 400 68 0.17 0.15 0.14 0.14 0.40 0.43 NMS 400 - 800 3532 0.23 0.20 0.22 0.19 0.57 0.43 San Marco-3 120 - 200 26 0.45 0.23 0.43 0.23 0.04 0.19 NMS 200 - 400 145 0.13 0.19 0.11 0.20 -0.10 0.32 AE-C NATE 200 - 400 3277 -0.30 0.19 -0.31 0.19 -0.35 0.74 NMS 400 - 800 513 -0.29 0.19 -0.32 0.19 -0.06 0.71 AE-C OSS 120 - 200 964 -0.07 0.32 -0.07 0.33 -0.57 0.81 NMS 200 - 400 2219 0.05 0.27 0.03 0.26 -0.27 0.92 AE-D OSS 120 - 200 365 -0.08 0.30 -0.11 0.29 -0.17 1.10 NMS 200 - 400 435 -0.24 0.35 -0.27 0.33 -0.34 1.29 AE-E NACE 120 - 200 518 0.12 0.25 0.10 0.25 -0.03 0.52 NMS 200 - 400 2819 -0.05 0.17 -0.06 0.17 -0.14 0.47 400 - 800 1661 -0.08 0.17 -0.09 0.17 -0.08 0.39 ESRO-4 200 - 400 2449 -0.14 0.31 -0.16 0.31 -0.42 1.03 NMS DE-2 NACS 200 - 400 4851 -0.12 0.18 -0.12 0.18 -0.18 0.67 NMS 400 - 800 4620 -0.13 0.19 -0.13 0.20 -0.32 0.56 800 -1200 673 -0.09 0.18 -0.11 0.18 -0.35 0.40 *Entire data set Table 6(a). Comparison of models to database on argon concentration for quiet geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 109* 0.47 0.22 0.45 0.23 0.23 0.19 NMS 200 - 400 8566* 0.38 0.48 0.32 0.48 0.27 0.73 San Marco-3 120 - 200 11 0.58 0.21 0.50 0.20 -0.10 0.23 NMS 200 - 400 66 1.38 0.29 1.15 0.28 0.54 0.36 AE-C NATE 200 - 400 341 0.38 0.40 0.33 0.42 0.52 0.79 NMS AE-C OSS 120 - 200 299 -0.10 0.38 -0.07 0.38 -0.20 0.47 NMS 200 - 400 3 6.90 0.56 6.53 0.59 13.55 0.59 AE-D OSS 120 - 200 159 0.69 0.81 0.72 0.82 0.45 0.79 NMS AE-E NACE 120 - 200 313 -0.03 0.18 -0.01 0.18 -0.25 0.24 NMS 200 - 400 336 0.15 0.26 0.10 0.25 -0.13 0.31 Rocket 120 - 200 111 -0.13 0.66 -0.15 0.64 -0.42 0.67 NMS ESRO-4 200 - 400 1038 -0.15 0.40 -0.18 0.40 -0.12 0.78 NMS DE-2 NACS 200 - 400 1029 -0.01 0.43 -0.16 0.44 -0.11 0.78 NMS 400 - 800 18 5.00 1.08 3.70 1.10 9.19 0.99 *Entire data set Table 6(b). Comparison of models to database on argon concentration for high geomagnetic activity levels (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 200 - 400 1723* 0.58 1.53 0.57 1.52 1.12 1.81 NMS AE-C NATE 200 - 400 47 0.54 0.41 0.58 0.42 0.12 0.67 NMS AE-C OSS 120 - 200 113 -0.01 0.50 0.14 0.50 0.43 0.64 NMS 200 - 400 4 74.95 2.16 69.97 2.01 88.57 1.91 AE-D OSS 120 - 200 11 4.51 1.25 4.27 1.25 3.27 1.25 NMS AE-E NACE 120 - 200 13 -0.18 0.13 -0.15 0.12 -0.46 0.21 NMS 200 - 400 58 0.55 0.79 0.58 0.76 -0.07 0.69 ESRO-4 200 - 400 223 -0.06 0.60 -0.07 0.59 0.55 1.07 NMS DE-2 NACS 200 - 400 465 0.12 0.73 -0.09 0.76 1.27 1.12 NMS 400 - 800 81 1.18 1.00 0.45 1.10 12.77 1.22 *Entire data set Table 6(c). Comparison of models to database on argon concentration across all geomagnetic activity levels Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AEROS-A 120 - 200 130* 0.43 0.23 0.45 0.23 0.24 0.20 NMS 200 - 400 22539* 0.28 0.50 0.28 0.50 0.40 0.87 San Marco-3 120 - 200 22 0.53 0.19 0.51 0.18 -0.04 0.23 NMS 200 - 400 109 1.30 0.27 1.16 0.27 0.49 0.34 AE-C NATE 200 - 400 896 0.51 0.37 0.51 0.39 0.78 0.85 NMS AE-C OSS 120 - 200 802 -0.08 0.43 0.00 0.44 -0.02 0.59 NMS 200 - 400 25 2.63 2.10 2.57 2.14 3.37 2.46 AE-D OSS 120 - 200 287 0.56 0.77 0.61 0.78 0.40 0.79 NMS AE-E NACE 120 - 200 646 -0.08 0.25 -0.05 0.25 -0.28 0.29 NMS 200 - 400 719 0.16 0.39 0.14 0.39 -0.13 0.46 Rocket 80 - 120 23 -0.35 0.54 -0.38 0.53 -0.58 0.52 NMS 120 - 200 168 -0.14 0.52 -0.14 0.49 -0.36 0.55 200 - 400 10 -0.34 0.02 -0.27 0.03 0.05 0.02 ESRO-4 200 - 400 2351 -0.19 0.44 -0.19 0.44 0.00 0.89 NMS DE-2 NACS 200 - 400 3045 -0.05 0.52 -0.15 0.53 0.23 0.96 NMS 400 - 800 170 1.22 1.01 0.64 1.10 8.32 1.17 *Entire data set Table 7(a). Comparison of models to database on O2 concentration for quiet geomagnetic activity (Ap <= 10) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD SMM* 120 - 200 42768‡ -0.19 0.37 -0.40 0.37 -0.68 0.40 UV Occ 120 - 200 913 -0.09 0.25 -0.37 0.29 -0.66 0.35 200 - 400 12995‡ -0.24 0.62 -0.47 0.70 -0.69 0.77 AE-C OSS 120 - 200 60 -0.02 0.23 -0.10 0.24 -0.29 0.23 NMS 200 - 400 23 0.06 0.42 0.00 0.38 -0.12 0.43 AE-D OSS 120 - 200 219 0.24 0.34 0.19 0.34 0.01 0.36 NMS 200 - 400 71 0.10 0.36 0.13 0.36 0.05 0.42 AE-E OSS 120 - 200 112 0.24 0.22 0.18 0.22 -0.12 0.25 NMS 200 - 400 11 0.20 0.26 0.22 0.26 -0.06 0.28 Rocket 120 - 200 11 -0.13 0.31 -0.16 0.26 -0.41 0.32 Absorption Rocket 120 - 200 211 0.12 0.35 -0.02 0.32 -0.39 0.34 NMS 200 - 400 29 -0.14 0.56 -0.27 0.47 -0.55 0.44 AE-C EUVS 100 47 -0.10 0.22 -0.06 0.23 -0.20 0.26 UV Occ 130 20 0.24 0.19 0.27 0.20 -0.16 0.21 150 61 0.18 0.28 0.08 0.28 -0.23 0.31 AE-E EUVS 100 114 0.00 0.33 -0.02 0.34 -0.06 0.32 UV Occ 130 77 0.02 0.20 -0.03 0.18 -0.43 0.21 150** 72 -0.21 0.19 -0.33 0.17 -0.56 0.24 150*** 152 -0.06 0.21 -0.19 0.19 -0.47 0.25 ‡ Entire data set; rows not marked relate to the subset of data selected to generate model. * Solar Maximum Mission ** Channel 19 *** Channel 06 Table 7(b). Comparison of models to database on O2 concentration for high geomagnetic activity (Ap >= 50) Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD SMM* 120 - 200 4136‡ -0.25 0.56 -0.49 0.61 -0.69 0.65 UV Occ 120 - 200 183 -0.13 0.34 -0.44 0.46 -0.67 0.56 200 - 400 1780‡ -0.82 3.77 -0.88 3.83 -0.92 3.86 AE-C OSS 120 - 200 2 0.31 0.23 0.23 0.20 0.42 0.09 NMS 200 - 400 1 1.25 0.00 1.00 0.00 0.70 0.00 AE-C EUVS 100 8 0.08 0.23 0.06 0.20 -0.26 0.15 UV Occ 130 1 0.23 0.00 0.19 0.00 0.00 0.00 150 7 0.30 0.39 0.11 0.39 0.27 0.38 AE-E EUVS 100 8 0.17 0.19 0.07 0.14 -0.05 0.12 UV Occ 130 8 0.14 0.16 0.04 0.16 -0.45 0.21 150** 5 0.87 1.59 0.44 1.67 -0.19 1.63 150*** 15 -0.04 0.29 -0.21 0.30 -0.53 0.35 ‡ Entire data set; rows not marked relate to the subset of data selected to generate model. * Solar Maximum Mission ** Channel 19 *** Channel 06 Table 7(c). Comparison of models to database on O2 concentration across all geomagnetic activity levels Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD SMM* 120 - 200 51848‡ -0.19 0.37 -0.42 0.39 -0.69 0.44 UV Occ 120 - 200 2091 -0.10 0.27 -0.38 0.32 -0.66 0.39 200 - 400 27073‡ -0.27 0.61 -0.52 0.72 -0.72 0.80 AE-C OSS 120 - 200 160 0.06 0.28 -0.02 0.28 -0.13 0.36 NMS 200 - 400 66 0.12 0.39 0.06 0.37 0.03 0.48 AE-D OSS 120 - 200 376 0.23 0.34 0.19 0.34 0.05 0.38 NMS 200 - 400 139 0.12 0.32 0.13 0.33 0.16 0.45 AE-E OSS 120 - 200 256 0.28 0.22 0.22 0.22 -0.11 0.25 NMS 200 - 400 47 0.15 0.29 0.15 0.29 -0.16 0.32 Rocket 120 - 200 14 -0.08 0.30 -0.12 0.27 -0.38 0.32 Absorption Rocket 80 - 120 37 -0.17 0.46 -0.22 0.45 -0.44 0.51 NMS 120 - 200 295 0.09 0.34 -0.04 0.31 -0.38 0.33 200 - 400 44 -0.20 0.55 -0.31 0.45 -0.56 0.42 AE-C EUVS 100 121 -0.01 0.23 0.04 0.24 -0.16 0.25 UV Occ 130 54 0.26 0.21 0.26 0.21 -0.09 0.24 150 130 0.17 0.31 0.07 0.31 -0.15 0.38 AE-E EUVS 100 249 0.05 0.30 0.03 0.31 -0.05 0.29 UV Occ 130 175 0.01 0.21 -0.03 0.19 -0.43 0.22 150** 163 -0.18 0.21 -0.32 0.19 -0.56 0.29 150*** 300 -0.05 0.22 -0.18 0.20 -0.48 0.27 ‡ Entire data set; rows not marked relate to the subset of data selected to generate model. * Solar Maximum Mission ** Channel 19 *** Channel 06 Table 8(a). Comparison of models to database on atomic nitrogen concentration for quiet geomagnetic activity levels (Ap <= 10)* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C OSS 200 - 400 380 -0.11 0.44 0.11 0.44 NMS 400 - 800 1994 -0.05 0.30 0.19 0.31 AE-D OSS 200 - 400 2180 -0.42 0.29 -0.29 0.30 NMS 400 - 800 871 -0.33 0.35 -0.16 0.36 AE-E OSS 200 - 400 3998 0.04 0.27 0.12 0.27 NMS DE-2 NACS 200 - 400 169 -0.75 0.72 -0.73 0.68 NMS 400 - 800 74 -0.62 0.50 -0.59 0.47 * Jacchia-70 model does not cover atomic nitrogen Table 8(b). Comparison of models to database on atomic nitrogen concentration for high geomagnetic activity (Ap >= 50)* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C OSS 200 - 400 21 -0.15 0.38 -0.02 0.40 NMS 400 - 800 335 0.00 0.38 0.18 0.40 DE-2 NACS 200 - 400 54 -0.73 1.13 -0.69 1.08 NMS 400 - 800 26 -0.07 1.27 -0.06 1.19 * Jacchia-70 model does not cover atomic nitrogen Table 8(c). Comparison of models to database on atomic nitrogen concentration across all geomagnetic activity levels* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C OSS 120 - 200 2 -0.96 0.26 -0.96 0.29 NMS 200 - 400 670 -0.12 0.41 0.09 0.42 400 - 800 4538 -0.07 0.32 0.17 0.33 AE-D OSS 200 - 400 3844 -0.42 0.31 -0.28 0.31 NMS 400 - 800 1659 -0.37 0.39 -0.19 0.39 AE-E OSS 200 - 400 7125 0.16 0.30 0.23 0.30 NMS DE-2 NACS 120 - 200 103 -0.44 0.63 -0.38 0.63 NMS 200 - 400 903 -0.61 0.81 -0.59 0.78 400 - 800 258 -0.46 0.73 -0.44 0.70 * Jacchia-70 model does not cover atomic nitrogen Table 9(a). Comparison of models to database on atomic hydrogen concentration for quiet geomagnetic activity levels (Ap <= 10)* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C BIMS 200 - 400 1756 0.03 0.30 0.05 0.31 IMS 400 - 800 466 0.06 0.40 0.08 0.41 AE-E BIMS 120 - 200 9 2.78 0.11 2.93 0.12 IMS 200 - 400 1113 0.02 0.28 0.00 0.27 400 - 800 516 -0.08 0.31 -0.05 0.32 * Jacchia-70 model does not cover atomic hydrogen Table 9(b). Comparison of models to database on atomic hydrogen concentration for high geomagnetic activity levels (Ap >= 50)* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C BIMS 200 - 400 220 0.04 0.59 0.04 0.60 IMS 400 - 800 65 -0.01 0.37 -0.02 0.36 AE-E BIMS 200 - 400 71 0.16 0.48 0.13 0.47 IMS 400 - 800 33 -0.19 0.29 -0.16 0.29 * Jacchia-70 model does not cover atomic hydrogen Table 9(c). Comparison of models to database on atomic hydrogen concentration across all geomagnetic activity levels* Data Set ALT PTS N00 M90 J70 MEAN SD MEAN SD MEAN SD AE-C BIMS 200 - 400 3735 0.06 0.32 0.07 0.33 IMS 400 - 800 942 0.03 0.38 0.03 0.38 AE-E BIMS 120 - 200 16 2.10 0.31 2.24 0.31 IMS 200 - 400 2275 0.01 0.30 -0.01 0.30 400 - 800 1084 -0.11 0.34 -0.07 0.35 * Jacchia-70 model does not cover atomic hydrogen