xper,xns,xew,xco
0.100000001 , 1.88071656 , 2.74746752 , 892.650024
0.200000003 , 3.30383849 , 3.79833770 , 1031.25000
0.300000012 , 4.59345722 , 2.71884060 , 1031.25000
0.500000000 , 2.70775700 , 3.65971971 , 1031.25000
1.00000000 , 1.84206450 , 1.66383553 , 562.650024
2.00000000 , 0.604288518 , 0.529620290 , 281.325012
3.00000000 , 0.144515961 , 0.142026216 , 187.688004