Altitude km

0

20

50

70

80

90

100

110

120

Geopotential feet

0

65411

162765

227158

259212

291162

323014

354767

386422

Pressure ATM

1.000e-0

5.529e-2

7.874e-4

5.154e-5

1.039e-5

1.812e-6

3.159e-7

7.011e-8

2.505e-8

Density wrt surface

1.000e-0

7.258e-2

8.383e-4

6.762e-5

1.507e-5

2.789e-6

4.575e-7

7.925e-8

1.814e-8

Pressure Pa

1.013e+5

5.457e+3

7.978e+1

5.221e+0

1.052e+0

1.836e-1

3.201e-2

7.104e-3

2.538e-3

Density kg/m³

1.225e-0

8.891e-2

1.027e-3

8.283e-5

1.846e-5

3.416e-6

5.604e-7

9.708e-8

2.222e-8

Temperature K

288.15

216.65

270.65

219.585

198.639

186.87

195.08

240

360

Gravity m/s2

9.8066

9.7452

9.6542

9.5942

9.5644

9.5348

9.5052

9.4759

9.4466

Pressure scale ht m

8434.5

6381.6

8047.4

6569.9

5961.7

5636

6009

7723

12091

Molecular weight

28.964

28.964

28.964

28.964

28.964

28.73

28.40

27.27

26.20

Mean free path m

6.633e-8

9.139e-7

7.913e-5

9.810e-4

4.402e-3

2.37e-2

0.142

0.788

3.31

Speed of sound m/s

340.29

295.07

329.80

297.06

282.54

275*

283*

320*

400*

Escape velocity m/s

11173

11156

11129

11112

11103

11095

11086

11077

11069

minus rotation m/s

10708

10689

10661

10642

10632

10623

10614

10604

10595

Mach #

31.5

36.2

32.3

35.8

37.6

39

37

33

26

Therm Cond J/m-s-K

2.536e-5

1.953e-5

2.397e-5

1.978e-5

1.800e-5

Ozone kg/m³

5.4e-8

3.80e-7

5.29e-9

4.3e-11

Water Vapor ppm

4686

4.5

7.6

1.4

0.6

worst case thunderstorm, falls off above 30km

Low Solar Activity

Altitude km

100

120

150

200

250

300

400

500

600

700

800

1000

Pressure Pa

3.2e-2

2.5e-3

Density kg/m³

5.6e-7

2.2e-8

Temperature K

195

360

Gravity m/s2

9.5

9.4

Pressure scale ht km

6.01

12.09

Molecular weight

28.4

26.2

Mean free path m

0.142

3.31

Average Solar Activity

Altitude km

100

120

150

200

250

300

400

500

600

700

800

1000

Pressure Pa

3.2e-2

2.5e-3

4.5e-4

8.5e-5

2.5e-5

8.8e-6

1.5e-6

3.0e-7

8.2e-8

3.2e-8

1.7e-8

7.5e-9

Density kg/m³

5.6e-7

2.2e-8

2.1e-9

2.5e-10

6.1e-11

1.9e-11

2.8e-12

5.2e-13

1.1e-13

3.1e-14

1.1e-14

3.6e-15

Temperature K

195

360

634

855

941

976

996

999

1000

1000

1000

1000

Gravity m/s2

9.51

9.45

9.36

9.22

9.08

8.94

8.68

8.43

8.19

7.95

7.74

7.32

Pressure scale ht km

6.01

12.09

23.38

36.18

44.92

51.19

59.68

68.78

88.24

130.6

193.9

288.2

est.dens.scale.ht km

Molecular weight

28.4

26.2

24.1

21.3

19.2

17.7

16.0

14.3

11.5

8.0

5.5

3.9

Mean free path m

0.142

3.31

33

240

890

2.6k

16k

77k

280k

730k

1400k

3100k

High Solar Activity

Pressure Pa

3.2e-2

2.5e-3

Density kg/m³

5.6e-7

2.2e-8

Temperature K

195

360

Gravity m/s2

9.51

9.45

Pressure scale ht km

6.01

12.09

Molecular weight

28.4

26.2

Mean free path m

0.142

3.31