@files = qw( gfs.t00z.pgrbf00.grib2 gfs.t00z.pgrbf03.grib2 gfs.t00z.pgrbf06.grib2 gfs.t00z.pgrbf09.grib2 gfs.t00z.pgrbf12.grib2 gfs.t00z.pgrbf15.grib2 gfs.t00z.pgrbf18.grib2 gfs.t00z.pgrbf21.grib2 gfs.t00z.pgrbf24.grib2 gfs.t00z.pgrbf27.grib2 gfs.t00z.pgrbf30.grib2 gfs.t00z.pgrbf33.grib2 gfs.t00z.pgrbf36.grib2 gfs.t00z.pgrbf39.grib2 gfs.t00z.pgrbf42.grib2 gfs.t00z.pgrbf45.grib2 gfs.t00z.pgrbf48.grib2 );