xper,xns,xew,xco
0.100000001 , 0.387126386 , 0.331612349 , 892.650024
0.200000003 , 0.388201594 , 0.339480817 , 1031.25000
0.300000012 , 0.396587491 , 0.370656490 , 1031.25000
0.500000000 , 0.536782622 , 0.478246897 , 1031.25000
1.00000000 , 1.24378526 , 1.64134669 , 562.650024
2.00000000 , 0.871955633 , 0.546288729 , 281.325012
3.00000000 , 0.348022312 , 0.293437988 , 187.688004