1    6717.219  -18453.385
       2    6494.517  -18451.826
     500    6713.429  -18411.954
     501    6671.269  -18410.862
     502    6571.036  -18408.315
     503    6497.445  -18406.424
     504    6497.565  -18371.484
     505    6595.180  -18277.920
     506    6716.720  -18280.973
    1001    6497.445  -18406.424