xper,xns,xew,xco
0.100000001 , 0.908712804 , 0.518332362 , 1083.50000
0.200000003 , 1.17857218 , 0.568777680 , 1250.00000
0.300000012 , 0.646832407 , 0.318347871 , 1250.00000
0.500000000 , 0.584527016 , 0.307138830 , 1250.00000
1.00000000 , 0.628323376 , 0.324937493 , 700.000000
2.00000000 , 0.779278874 , 0.601607919 , 350.000000
3.00000000 , 2.00320816 , 0.875773668 , 233.500000