LOGICAL FLAGS ---
f t f f                  laprn, llput, ltest, l_f33_f44
-----------------
727                      nmeas (number of lines for reading of Aeronet data)
0.440 0.675 0.870 1.020  WAVEA
0.355 0.532 1.064        WAVEL
FILENAMES -------
input.txt                input_filename
output.txt               out_filename