Dataset {
  Grid {
    ARRAY:
      Float32 landseamask[time = 1][lat = 1800][lon = 3600];
    MAPS:
      Float64 time[time = 1];
      Float64 lat[lat = 1800];
      Float64 lon[lon = 3600];
  } landseamask;
  Float64 time[time = 1];
  Float64 lat[lat = 1800];
  Float64 lon[lon = 3600];
} GPM_IMERG_LandSeaMask.2;