xper,xns,xew,xco
0.100000001 , 0.791888595 , 0.822087109 , 892.650024
0.200000003 , 1.25650966 , 1.50005794 , 1031.25000
0.300000012 , 1.78113174 , 1.80646014 , 1031.25000
0.500000000 , 2.02140427 , 3.84981704 , 1031.25000
1.00000000 , 1.12297904 , 0.898475230 , 562.650024
2.00000000 , 0.495674729 , 0.654632330 , 281.325012
3.00000000 , 0.166492358 , 0.317236751 , 187.688004