Dataset {
  Grid {
    ARRAY:
      Float32 aod[time = 1000][lev = 1][lat = 721][lon = 1152];
    MAPS:
      Float64 time[time = 1000];
      Float64 lev[lev = 1];
      Float64 lat[lat = 721];
      Float64 lon[lon = 1152];
  } aod;
  Float64 time[time = 1000];
  Float64 lev[lev = 1];
  Float64 lat[lat = 721];
  Float64 lon[lon = 1152];
} AeroObs/monthly/misr.ctl;