xy.dat
5.575696 22.34309810.224256 18.057792
13.868704 12.723279
16.483300 6.938501
18.088209 1.267135
18.742934 -3.807452
18.538943 -7.914587
17.591882 -10.814730
16.033767 -12.404132
14.005465 -12.706977
11.649753 -11.857294
9.105155 -10.073488
6.500735 -7.628648
3.951929 -4.819762
1.557454 -1.938686
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-6.033664 3.070600
-5.433522 1.636773
-4.683045 0.238340
-3.832113 -1.006439
-2.928539 -2.007547
-2.016352 -2.707577
-1.134443 -3.082701}
