xper,xns,xew,xco
0.100000001 , 1.88115001 , 2.74748278 , 892.650024
0.200000003 , 3.30339408 , 3.79832244 , 1031.25000
0.300000012 , 4.59304285 , 2.71885610 , 1031.25000
0.500000000 , 2.70712280 , 3.65971875 , 1031.25000
1.00000000 , 1.84145665 , 1.66384840 , 562.650024
2.00000000 , 0.604867578 , 0.529634476 , 281.325012
3.00000000 , 0.145057127 , 0.142015770 , 187.688004