GUSTAV of 1990 has 84 passes flown at two pressure levels: 850 and 700 mb.
The storm was processed as 2 logical storms. The profile files are divided
into 2 groups according to standard pressure:
There are 48 passes at 850 mb; the profile files are named GUSTAV90_850_xxx.APF,
and they were processed using the track GUSTAV90_850MB.TRK. There are 36
passes at 700 mb; the files are named GUSTAV90_700_xxx.APF, and they were
processed using GUSTAV90_700MB.TRK. Note that the two groups of passes
overlap in time.
There was also a single penetration at 500 mb which could not be processed
because the program BIGD cannot fit splines to a single center.