Dataset {
    Float32 /trajectoryNameLen[15];
    String /trajectory_id[15];
    Float64 /latitude_time[18];
    Float64 /longitude[18];
    Float64 /longitude_time[18];
    Float64 /latitude[18];
    Float32 /depth[21];
    Float64 /depth_time[21];
} cell-Normal.nc4;