include file: SWFSTBND 1
      INTEGER FSTBAND(NGASES),         !  First and last band in which     SWFSTBND.2      
     &     LSTBAND(NGASES)             !               each gas absorbs    SWFSTBND.3      
      DATA FSTBAND / 2, 1, 3 /, LSTBAND / 4, 1, 4 /                        SWFSTBND.4