The flights in ALLEN80 were processed using several tracks, since this was
a long storm with flights at various altitudes. The original TRK and CTR
files have been lost, so replacement files have been created, which are not
identical to the originals, but will probably serve just as well for any
processing you wish to do on the data. The TRK files and the flights they
should be used for are:
   ALLEN80_500MB.TRK     08H
   ALLEN80_600MB.TRK     05H and 08F
   ALLEN80_700MB1.TRK    05F 07H
   ALLEN80_700MB2.TRK    09I 09H
   ALLEN80_850MB.TRK     05I, 06H, 06I and 08I (flights at 850mb and 900mb)