Dataset {
    Float32 /trajectoryNameLen[15];
    String /trajectory_id[15];
    Float64 /depth_time[721];
    Float64 /latitude[177];
    Float64 /latitude_time[177];
    Float64 /longitude[179];
    Float32 /depth[721];
    Float64 /longitude_time[179];
} cell-Normal.nc4;