xper,xns,xew,xco
0.100000001 , 2.25369048 , 1.47393847 , 1083.50000
0.200000003 , 4.78813124 , 3.51149940 , 1250.00000
0.300000012 , 5.33951044 , 4.68783236 , 1250.00000
0.500000000 , 3.51996636 , 2.51584029 , 1250.00000
1.00000000 , 0.432863593 , 0.467780381 , 700.000000
2.00000000 , 0.170412958 , 9.12802815E-02 , 350.000000
3.00000000 , 9.15896595E-02 , 3.69307734E-02 , 233.500000