Dataset {
  Grid {
    ARRAY:
      Float32 topo[time = 1][lat = 6000][lon = 4800];
    MAPS:
      Float64 time[time = 1];
      Float64 lat[lat = 6000];
      Float64 lon[lon = 4800];
  } topo;
  Float64 time[time = 1];
  Float64 lat[lat = 6000];
  Float64 lon[lon = 4800];
} topo/E100N90;