Usage:
      bufrdump.pl <bufr file(s)>
          [--filter <filter file | filter list>]
          [--param <parameter file | parameter list> [--csv [--delimiter <del>]]
          [--sort]
          [--sort_on <parameter>[-]]
          [--station <station list>]
          [--transform <transformation file>]
          [--lon1 <x1>]
          [--lat1 <y1>]
          [--lon2 <x2>]
          [--lat2 <y2>]
          [--obstype <amdar|ocea|surface|sounding|sounding->]
          [--tablepath <path to BUFR tables>]
          [--help]