Dataset {
    Float32 T[T = 6940];
    Grid {
     ARRAY:
        Float64 amplitude[T = 6940];
     MAPS:
        Float32 T[T = 6940];
    } amplitude;
    Grid {
     ARRAY:
        Float64 PC1[T = 6940];
     MAPS:
        Float32 T[T = 6940];
    } PC1;
    Grid {
     ARRAY:
        Float64 PC2[T = 6940];
     MAPS:
        Float32 T[T = 6940];
    } PC2;
    Grid {
     ARRAY:
        Float64 phase[T = 6940];
     MAPS:
        Float32 T[T = 6940];
    } phase;
} frozen;