xper,xns,xew,xco
0.100000001 , 0.670029581 , 0.901525974 , 1083.50000
0.200000003 , 0.588878155 , 0.703071594 , 1250.00000
0.300000012 , 0.578505874 , 0.450492263 , 1250.00000
0.500000000 , 0.572110951 , 0.423668623 , 1250.00000
1.00000000 , 0.605834961 , 0.461605251 , 700.000000
2.00000000 , 0.895708144 , 0.703834414 , 350.000000
3.00000000 , 2.05888915 , 1.61462283 , 233.500000