data := [[-.518818421, 12.56564328], [-1.809946005, 13.62868374], [9.215024927
, 3.387501350], [.449104194, 11.10717774], [.388316950, 11.14428979], [-4.6267\
36317, 17.32762920], [3.372603791, 7.450120236], [-3.011869048, 14.41232510],
[-.429611443, 14.43983055], [2.964895184, 7.983638134], [4.890191974, 5.173353\
156], [-8.887557140, 17.89200029], [-4.697934410, 16.86710305], [-9.849304505,
19.13378523], [5.513422243, 7.595636344], [-6.640440378, 18.70064364], [-3.490\
265049, 14.71330505], [-5.191714542, 17.71448879], [-8.093046619, 19.94419846]
, [1.012728948, 10.23181363], [-7.551831706, 17.61944831], [4.687659190, 6.380\
083562], [.209517300e-1, 9.969846494], [4.304612789, 5.123340033], [-9.6342837\
33, 20.76735494]];