These files included line-by-line optical properties for the six standard atmosphere by Anderson et al. [1986]. They were generated using genln2 based on HITRAN96 and may directly be used as molecular_tau_file for uvspec. To make sure that the input is consistent, please use the respective atmosphere_file, e.g. molecular_tau_file afglms.10000.cdf atmosphere_file ../data/atmmod/afglms.dat since Rayleigh scattering as well as temperature profiles are taken from the atmosphere_file. The numbers in the filename indicates the wavenumber range covered by the file. E.g. afglms.01500.cdf contains data from 1500cm-1 to 2000cm-1, that is from 5 micron to 6.67 micron. In total, the wavelength range from 500 nm to 100 micron is covered. Please note that due to the nature of the HITRAN data base the Chappuis band of ozone around 500 - 600nm is not included! Line absorption by the following gases is included: H2O, CO2, O3, N2O, CO, CH4, O2, and N2 Also included is the water vapour continuum.