xper,xns,xew,xco
0.100000001 , 0.451008052 , 0.799185336 , 892.650024
0.200000003 , 0.546505928 , 0.447363466 , 1031.25000
0.300000012 , 0.754953265 , 0.708614588 , 1031.25000
0.500000000 , 1.36966324 , 0.925788224 , 1031.25000
1.00000000 , 0.509817481 , 0.262649775 , 562.650024
2.00000000 , 0.115392782 , 0.114701472 , 281.325012
3.00000000 , 4.97619957E-02 , 7.30708167E-02 , 187.688004