Atmospheric model NRLMSISE-00: problem at 35 km
For the atmospheric model NRLMSISE-00, there is a bug when altitude is exactly (at machine accuracy) = 35.0000000... km, identical to the one corrected in the C version.
The test: if (alt < ZN3[0])
should be changed to if (alt <= ZN3[0])
TBN: the ftp site (for the Fortran version) is no longer available. As seen in NRLMSISE-00 - Dr. Dominik Brodowski page, the Fortran page should be http://uap-www.nrl.navy.mil/models_web/msis/msis_home.htm but is not available either ...