xper,xns,xew,xco
0.100000001 , 0.786324739 , 0.581649959 , 1083.50000
0.200000003 , 0.727246046 , 0.716003716 , 1250.00000
0.300000012 , 1.14332318 , 1.12129498 , 1250.00000
0.500000000 , 0.768664420 , 0.941486001 , 1250.00000
1.00000000 , 1.26773882 , 1.92458212 , 700.000000
2.00000000 , 0.405648738 , 0.515078485 , 350.000000
3.00000000 , 0.136657044 , 0.218821794 , 233.500000