Dataset {
    String trajectory_id;
    Float64 Time[Time = 20];
    Grid {
      Array:
        Float64 latitude[Time = 20];
      Maps:
        Float64 Time[Time = 20];
    } latitude;
    Grid {
      Array:
        Float64 longitude[Time = 20];
      Maps:
        Float64 Time[Time = 20];
    } longitude;
    Grid {
      Array:
        Float32 depth[Time = 20];
      Maps:
        Float64 Time[Time = 20];
    } depth;
} shore.nc;