xper,xns,xew,xco
0.100000001 , 3.83283091 , 3.48752832 , 1190.19995
0.200000003 , 1.64305007 , 1.54786181 , 1375.00000
0.300000012 , 1.25396383 , 1.06185150 , 1375.00000
0.500000000 , 0.727477908 , 0.962356985 , 1375.00000
1.00000000 , 1.03770232 , 1.04354966 , 800.250000
2.00000000 , 0.707724631 , 0.497625440 , 399.850006
3.00000000 , 0.523686767 , 0.328275502 , 266.750000