% read refractive index for aerosol, water and so on.
% ascii OR netCDF
%http://hitran.org/data/Aerosols-2016/ascii/
%http://hitran.org/data/Aerosols-2016/netcdf/

websave('test.dat','http://hitran.org/data/Aerosols-2016/ascii/single_files/warren_ice.dat');
x=importdata('test.dat');