data := [[8, -18.98699660], [-1.292700344, -18.50447662], [-7.732469810, -20.1\
6177093], [-1.620054242, -17.83576964], [2.563998543, -17.22411312], [-3.22459\
2510, -17.44015530], [-2.044088051, -17.13174758], [6.615222272, -15.88256336]
, [.2376253107, -16.70907940], [-7.882550098, -19.49945368], [3.491496914, -15\
.99333827], [4.914010813, -14.65853966], [-2.803482556, -17.99909958], [-5.648\
242858, -19.59498531], [-6.892071916, -19.94746756], [.103377304, -18.16421748
], [-9.717216680, -18.69679116], [-9.811664544, -19.97974290], [-6.693944887,
-18.66659276], [-7.421867815, -18.65040645], [9.621302732, -14.49436202], [.51\
59782368, -17.37702569], [-.472076932, -17.31446021], [.3255993494, -16.830299\
00], [1.048212153, -15.76408382], [-6.366061958, -19.17236093]];