Dataset {
    Float32 /trajectoryNameLen[15];
    String /trajectory_id[15];
    Float64 /depth_time[2973];
    Float64 /latitude[545];
    Float64 /latitude_time[545];
    Float64 /longitude[652];
    Float32 /depth[2973];
    Float64 /longitude_time[652];
} cell-Normal.nc4;