data := [[8, -20.23376997], [-9.158315679, -19.40772000], [-2.574358968, -18.78\
234852], [-9.654467040, -18.69757841], [-.449801596, -17.34151645], [-7.5164118\
42, -19.05002751], [-9.908765026, -20.02282722], [-7.817799561, -19.61030918],
[1.485375391, -17.97482539], [-.663992269, -17.43654466], [-5.296763383, -19.39\
863253], [-2.600960781, -18.38294782], [4.159885934, -16.19907428], [2.87665087\
8, -17.40013289], [.121150629, -18.42763820], [-.3807516888, -18.52583656], [7.\
939098304, -17.23889262], [.740417505, -18.43098371], [-8.991033420, -20.381390\
05], [3.330279983, -17.64852932], [9.490777791, -16.43246397], [4.429119462, -\
17.66117305], [6.995659989, -17.10860161], [9.762909459, -14.96806277], [-2.074\
835610, -18.94528943], [7.075492760, -17.04455048]];