xper,xns,xew,xco
0.100000001 , 1.67876768 , 1.02802420 , 892.650024
0.200000003 , 0.597823977 , 0.698405802 , 1031.25000
0.300000012 , 0.516605616 , 0.733860314 , 1031.25000
0.500000000 , 0.465756327 , 0.497836828 , 1031.25000
1.00000000 , 0.394234180 , 0.433583528 , 562.650024
2.00000000 , 0.196274042 , 0.165738851 , 281.325012
3.00000000 , 6.01287931E-02 , 7.89753050E-02 , 187.688004