This directory provides libraries of ATRAN model FITS files for FORCAST,
FIFI-LS and FLITECAM, and Planetary Spectrum Generator (PSG) model FITS files for EXES.

To verify that you've successfully downloaded any of the ATRAN model files, you can run an md5 checksum on the file and compare the results to the contents of the checksum text files provided above. 

After downloading and unpacking a library, its location can be provided to the pipeline as an optional parameter in the telluric correction step.