data := [[3.726887239, -.298731484], [10.18060699, -2.111910761], [5.354456346
, 1.292539940], [-5.205001915, 11.38648710], [2.373983561, 4.402376870], [.827\
397819, 6.884878250], [7.804152934, -3.431370215], [-6.162253690, 12.42053799]
, [-8.318356083, 16.33935634], [5.554662042, .962660820], [.147535021, 5.18883\
5095], [7.206975595, -.872478698], [5.012011766, 1.158972357], [-1.591777982,
6.066535747], [-4.785670371, 10.22174777], [-.828754578, 7.393619224], [7.4114\
54172, -4.420258378], [8.136536420, -1.857127606], [.986878675, 6.771720343],
[5.087630295, -.191745575], [-5.996087692, 10.34433891], [-3.097157344, 11.115\
84633], [-7.351032993, 15.18005837], [6.708194798, -.38275525e-1], [8.85514509\
2, -1.880576546]];