170.0D0     0      1      0      0    -20.0D0  -10.0D0   1500000.D0 
#HOBS     ISSR  ITRAN  IMAGE  IPLOT   STARTALT DELALT    XMAX
 100       100    1.0     40      40       1    
#HEIGHT   WIDTH  PPAM   KMIN   KMAX    KSTEP  
stmod1.dat
#FILENAME

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 VALUES  DEFAULT  DESCRIPTION
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 HOBS     5.D0    Height of the Observer  (5.D0)
 ISSR     1       Compute single scatter radiance?
 ITRAN    1       Transfer Curve :    0 - Stnd. Atmos. Tran. Curv.
                                      1 - Use layer model 
                                      2 - Read Transfer Curve
 IMAGE    1       Make a ppm image?
 IPLOT    0       Plot ray trajectories?
 STARTALT -20.D0  Starting Altitude
 DELALT   0       Altitude shift of the sun in arcminutes 
 XMAX     150000  Maximum circumference of the earth to trace ray (ducting)
 HEIGHT   100     Image height in pixels
 WIDTH    300     Image width in pixels
 PPAM     2       Pixels per arcminute
 KMIN     1       Wavelength minimum (380nm)
 KMAX     81      Wavelength maximum (780nm)
 KSTEP    1       Wavelength increment (5nm)
 #                Comment line
 ============================================================================