Dataset {
    Float32 X[X = 267];
    Float32 T[T = 485];
    Float32 Y[Y = 387];
    Grid {
     ARRAY:
        Float32 spi[Y = 387][X = 267][T = 485];
     MAPS:
        Float32 Y[Y = 387];
        Float32 X[X = 267];
        Float32 T[T = 485];
    } spi;
} spi;