xper,xns,xew,xco
0.100000001 , 0.316020638 , 0.278805494 , 1082.00000
0.200000003 , 0.360121071 , 0.562728643 , 1250.00000
0.300000012 , 0.236746132 , 0.270103544 , 1250.00000
0.500000000 , 8.83152410E-02 , 9.92944017E-02 , 1000.00000
1.00000000 , 6.39168695E-02 , 6.69772029E-02 , 500.000000
2.00000000 , 3.72761413E-02 , 4.28302325E-02 , 250.000000
3.00000000 , 1.88280530E-02 , 1.11120101E-02 , 144.500000