xper,xns,xew,xco
0.100000001 , 1.87981153 , 2.74708295 , 892.650024
0.200000003 , 3.30476213 , 3.79872942 , 1031.25000
0.300000012 , 4.59432697 , 2.71845937 , 1031.25000
0.500000000 , 2.70900154 , 3.66043782 , 1031.25000
1.00000000 , 1.84326589 , 1.66342449 , 562.650024
2.00000000 , 0.603137970 , 0.529202521 , 281.325012
3.00000000 , 0.143422499 , 0.142441690 , 187.688004