   File format : GRIB
    -1 : Institut Source   Ttype    Levels Num    Points Num Dtype : Parameter ID
     1 : unknown  unknown  instant       1   1      2592   1  P16  : 1             
   Grid coordinates :
     1 : lonlat                   : points=2592 (72x36)
                              lon : -177.5 to 177.5 by 5 degrees_east  circular
                              lat : 87.5 to -87.5 by -5 degrees_north
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :  unlimited steps
     RefTime =  0000-01-01 00:00:00  Units = hours  Calendar = proleptic_gregorian
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  0000-01-01 00:00:00  0000-02-01 00:00:00  0000-03-01 00:00:00  0000-04-01 00:00:00
  0000-05-01 00:00:00  0000-06-01 00:00:00  0000-07-01 00:00:00  0000-08-01 00:00:00
  0000-09-01 00:00:00  0000-10-01 00:00:00  0000-11-01 00:00:00  0000-12-01 00:00:00
