xper,xns,xew,xco
0.100000001 , 2.25402617 , 1.47395587 , 1083.50000
0.200000003 , 4.78794193 , 3.51148248 , 1250.00000
0.300000012 , 5.33929014 , 4.68784952 , 1250.00000
0.500000000 , 3.52017260 , 2.51585555 , 1250.00000
1.00000000 , 0.432496369 , 0.467768669 , 700.000000
2.00000000 , 0.170184031 , 9.12895575E-02 , 350.000000
3.00000000 , 9.17827114E-02 , 3.69189605E-02 , 233.500000