Dataset {
    Int32 /DeadReckonUsingMultipleVelocitySources/velocity_source[18294];
    Float64 /DeadReckonUsingMultipleVelocitySources/velocity_source_time[18294];
    Float32 /trajectoryNameLen[15];
    String /trajectory_id[15];
    Float32 /depth[55];
    Float64 /depth_time[55];
} hotspot-Normal.nc4;