Dataset {
  Grid {
    ARRAY:
      Float32 mask[time = 1][lev = 1][lat = 180][lon = 360];
    MAPS:
      Float64 time[time = 1];
      Float64 lev[lev = 1];
      Float64 lat[lat = 180];
      Float64 lon[lon = 360];
  } mask;
  Float64 time[time = 1];
  Float64 lev[lev = 1];
  Float64 lat[lat = 180];
  Float64 lon[lon = 360];
} misc/sst/mask;