xper,xns,xew,xco
0.100000001 , 0.937560976 , 1.45824254 , 1082.00000
0.200000003 , 2.23841763 , 2.03586483 , 1250.00000
0.300000012 , 1.46009696 , 2.47706652 , 1250.00000
0.500000000 , 1.11301696 , 1.63135493 , 1000.00000
1.00000000 , 0.460575134 , 0.394333243 , 500.000000
2.00000000 , 0.126111984 , 6.22496679E-02 , 250.000000
3.00000000 , 4.24795114E-02 , 3.73415127E-02 , 144.500000