data := [[8, 17.83866552], [-7.889168973, 20.59928932], [-6.521353918, 21.73031\
889], [-9.201329757, 22.22777154], [8.126472521, 13.74402967], [3.340709591, 15\
.66424469], [6.035655476, 15.49883321], [-2.310685066, 19.44908103], [3.6028450\
45, 15.12618165], [-4.539856806, 20.48736094], [8.430147609, 13.61199010], [1.3\
14136390, 16.24173533], [4.087777970, 15.66407726], [-9.855762624, 21.41436864]
, [-1.354671720, 18.70696764], [4.794222378, 14.48063799], [.605107010e-1, 16.9\
3859385], [4.562741267, 15.69045963], [.264637387, 17.53797429], [.7427545070,
16.93921150], [7.976839508, 13.19252740], [-4.454926964, 19.91561998], [-3.0206\
34039, 19.45122832], [-5.699514635, 19.97525598], [-3.903665425, 18.36891831],
[-8.211906189, 22.17293837]];