Dataset {
    Float64 /longitude_time[21];
    Float32 /depth[21];
    Float64 /depth_time[21];
    Float64 /time_fix[6];
    String /trajectory_id[15];
    Float32 /trajectoryNameLen[15];
    Float64 /longitude[21];
    Float64 /latitude[21];
    Float64 /latitude_time[21];
    Float64 /time_fix_time[6];
} cell-Normal.nc4;