xper,xns,xew,xco
0.100000001 , 0.792011857 , 0.822300732 , 892.650024
0.200000003 , 1.25657463 , 1.50024056 , 1031.25000
0.300000012 , 1.78119302 , 1.80624366 , 1031.25000
0.500000000 , 2.02146792 , 3.85000515 , 1031.25000
1.00000000 , 1.12291884 , 0.898589194 , 562.650024
2.00000000 , 0.495700389 , 0.654493570 , 281.325012
3.00000000 , 0.166449353 , 0.317165732 , 187.688004