xper,xns,xew,xco
0.100000001 , 0.937425315 , 1.45840073 , 1082.00000
0.200000003 , 2.23855162 , 2.03573251 , 1250.00000
0.300000012 , 1.46001351 , 2.47718716 , 1250.00000
0.500000000 , 1.11317778 , 1.63145220 , 1000.00000
1.00000000 , 0.460655719 , 0.394395560 , 500.000000
2.00000000 , 0.126163587 , 6.23145141E-02 , 250.000000
3.00000000 , 4.21911292E-02 , 3.73793133E-02 , 144.500000