xper,xns,xew,xco
0.100000001 , 1.88073337 , 2.74746156 , 892.650024
0.200000003 , 3.30382085 , 3.79834342 , 1031.25000
0.300000012 , 4.59344196 , 2.71883607 , 1031.25000
0.500000000 , 2.70772576 , 3.65976119 , 1031.25000
1.00000000 , 1.84203601 , 1.66382730 , 562.650024
2.00000000 , 0.604316890 , 0.529613018 , 281.325012
3.00000000 , 0.144537985 , 0.142040342 , 187.688004