data := [[7.673287745, -21.38352702], [8.059413722, -23.29622592], [-5.4141725\
96, -7.851722574], [-9.704879843, -2.868530711], [.853081767, -13.47104690], [
8.308902009, -23.22117316], [-8.577889446, -1.119746352], [3.735215417, -17.91\
990884], [-2.871775544, -7.464703448], [.882910079, -12.84606690], [5.75140499\
1, -18.46910244], [-8.088161752, -3.665835267], [10.53873691, -24.16321890], [
9.620734280, -22.28851242], [5.619275189, -18.92225792], [-5.547515596, -7.571\
751732], [.319152518, -11.88054102], [-2.674379177, -10.85074303], [1.35690131\
7, -11.57675438], [-10.06753507, .18655785e-1], [-.5098302361, -10.92811641],
[3.164231677, -13.96336600], [.543059845, -14.66338342], [-2.182182766, -9.453\
735210], [4.564964938, -19.92559448]];