40.00000      H: atmospheric scale height (km) (used as a reference only)
  0.040000000     Typical log(sigma) for 1st layer (z=H*log(sigma))
  0.240000000     Typical log(sigma) for 2nd layer, etc...
  0.640000000
  1.600000000
  3.600000000
  7.200000000
 12.457209840
 17.390108120
 23.191633240
 29.808692920
 37.172176840
 45.206308400
 53.831887200
 62.973513600
 72.558302800
 82.522678400
 92.806120000
103.360567200
114.137802000
125.105094800
136.223478400
147.474737200
158.824243600
170.268688400
181.771335600
193.346900800
204.947319200
216.613330800
228.270988400
240.003299600
251.685886400
263.474598000
275.151500800
287.001610000
298.636570000
310.572548000
322.112846400
334.189224400
345.548553600
357.870636000
368.899574400
381.662178000
392.096252400
405.654832000
417.023764000
430.028000000
443.499352000
456.162812000
469.293936000
472.097320000
485.525628000
510.559464000
525.345664000
540.110748000
556.096956000