This directory contains files representing the MSIS90 climatology

The input data were provided by Stefan Lossow, that got it from Jörg Gumbel.

The data comes for 13 months. This was interpreted as month 1 is
January 1 etc. The processed data are given on a pressure grid. The
pressure for input data was calculated from the number density. The
provided altitudes are the result of an interpolation of input
altitudes (no hydrostatic equilibrium has been enforced/checked).

Patrick Eriksson
2009-11-03