data := [[5.423309047, -7.036274692], [6.927177872, -15.73219660], [6.54764315\
5, -13.41675098], [2.514739938, -3.746233892], [8.811576298, -18.16851789], [7\
.680687040, -11.19618532], [3.429931654, -3.542916990], [5.949431747, -13.2992\
1614], [5.600191887, -9.459471559], [.668350414, -3.121598683], [4.905297580,
-12.10985948], [-10.36155588, 15.01344700], [5.041416226, -10.87504294], [6.32\
5974157, -10.83950036], [-5.041135165, 3.654222363], [7.670769651, -14.1209233\
2], [8.113925823, -14.61305398], [8.077169523, -15.74838485], [8.744644329, -\
15.47496362], [-7.879705781, 10.67921929], [1.864816121, -6.543236769], [2.290\
527287, -3.627783209], [.635849703, -.18397369e-1], [8.188234188, -15.34431363
], [7.763908966, -13.42324834]];