xper,xns,xew,xco
0.100000001 , 1.88071835 , 2.74745798 , 892.650024
0.200000003 , 3.30383658 , 3.79834819 , 1031.25000
0.300000012 , 4.59345531 , 2.71883202 , 1031.25000
0.500000000 , 2.70774746 , 3.65977836 , 1031.25000
1.00000000 , 1.84205639 , 1.66382122 , 562.650024
2.00000000 , 0.604296565 , 0.529606879 , 281.325012
3.00000000 , 0.144521087 , 0.142044261 , 187.688004