xper,xns,xew,xco
0.100000001 , 1.88065517 , 2.74738836 , 892.650024
0.200000003 , 3.30390215 , 3.79842019 , 1031.25000
0.300000012 , 4.59351540 , 2.71876335 , 1031.25000
0.500000000 , 2.70785856 , 3.65993500 , 1031.25000
1.00000000 , 1.84216070 , 1.66374457 , 562.650024
2.00000000 , 0.604198635 , 0.529529870 , 281.325012
3.00000000 , 0.144429654 , 0.142114744 , 187.688004