xper,xns,xew,xco
0.100000001 , 0.451026559 , 0.798932135 , 892.650024
0.200000003 , 0.546483994 , 0.446860909 , 1031.25000
0.300000012 , 0.754968286 , 0.708742321 , 1031.25000
0.500000000 , 1.36968064 , 0.925908387 , 1031.25000
1.00000000 , 0.509805799 , 0.262522638 , 562.650024
2.00000000 , 0.115403958 , 0.114463583 , 281.325012
3.00000000 , 4.97481599E-02 , 7.28061348E-02 , 187.688004