Dataset {
    Float32 T[T = 24715];
    Float32 Y[Y = 29];
    Float32 X[X = 144];
    Grid {
     ARRAY:
        Float32 NAO_index[T = 24715];
     MAPS:
        Float32 T[T = 24715];
    } NAO_index;
    Grid {
     ARRAY:
        Float32 NAO_pattern[X = 144][Y = 29];
     MAPS:
        Float32 X[X = 144];
        Float32 Y[Y = 29];
    } NAO_pattern;
} NAO;