File format : GRIB 
     -1 : Institut Source   Ttype    Levels Num    Points Num Dtype : Parameter ID 
      1 : ECMWF    unknown  instant       1   1    131072   1  P16  : 168.128        
    Grid coordinates : 
      1 : gaussian                 : points=131072 (512x256)  np=128 
                               lon : 0 to 359.297 by 0.703125 degrees_east  circular 
                               lat : 89.4628 to -89.4628 degrees_north 
    Vertical coordinates : 
      1 : surface                  : levels=1 
    Time coordinate :  1 step 
      RefTime =  2014-01-01 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 
   2014-01-01 00:00:00