xper,xns,xew,xco
0.100000001 , 1.88078773 , 2.74739122 , 892.650024
0.200000003 , 3.30376434 , 3.79841757 , 1031.25000
0.300000012 , 4.59338999 , 2.71876550 , 1031.25000
0.500000000 , 2.70763469 , 3.65994143 , 1031.25000
1.00000000 , 1.84194756 , 1.66374576 , 562.650024
2.00000000 , 0.604397535 , 0.529528975 , 281.325012
3.00000000 , 0.144613758 , 0.142116562 , 187.688004