xper,xns,xew,xco
0.100000001 , 0.322071075 , 0.403361589 , 1083.50000
0.200000003 , 0.533031464 , 0.340850383 , 1250.00000
0.300000012 , 0.240636498 , 0.171146527 , 1250.00000
0.500000000 , 0.104390368 , 8.02910626E-02 , 1250.00000
1.00000000 , 2.66610533E-02 , 1.99602377E-02 , 700.000000
2.00000000 , 9.39151365E-03 , 7.56047061E-03 , 350.000000
3.00000000 , 6.93130353E-03 , 3.65192560E-03 , 233.500000