L1
     4     3
     235.561218     290.571899    0
     265.953522     436.515747    0
     429.349854     450.959656    0
     535.271545     386.262909    0
L2
     4     3
     246.995941     262.285858    0
     351.112183     237.309906    0
     443.191895     262.285858    0
     553.627319     327.283539    0