data := [[-3.122242963, -7.082278702], [10.01530052, -20.55430994], [8.4439809\
87, -17.64907980], [-4.061073962, -7.969644198], [4.311143576, -13.14101537],
[-5.698165393, -5.346307070], [-6.967972149, -2.375792659], [9.199334791, -20.\
22589740], [1.800422238, -13.72996402], [-7.059654503, -3.471552495], [1.45992\
1670, -10.89386897], [5.206451949, -17.36261351], [-5.363083713, -7.225355483]
, [-5.927447457, -3.660909200], [7.869792137, -17.64942367], [.502131880, -11.\
61097315], [4.489560739, -14.63839424], [.495771294, -10.98315678], [-1.423452\
704, -9.382572498], [-.7468009373, -11.82320724], [-6.377673476, -2.759954919]
, [4.723259158, -14.20821198], [6.310883726, -16.78073128], [-7.966141080, -.6\
19520015], [-2.449978164, -9.806105840]];