xper,xns,xew,xco
0.100000001 , 1.88076115 , 2.74749446 , 892.650024
0.200000003 , 3.30379128 , 3.79830980 , 1031.25000
0.300000012 , 4.59341621 , 2.71886754 , 1031.25000
0.500000000 , 2.70766878 , 3.65966821 , 1031.25000
1.00000000 , 1.84198225 , 1.66386378 , 562.650024
2.00000000 , 0.604364038 , 0.529649794 , 281.325012
3.00000000 , 0.144584179 , 0.142002031 , 187.688004