xper,xns,xew,xco
0.100000001 , 0.786967754 , 0.580402851 , 1083.50000
0.200000003 , 0.727849662 , 0.714662373 , 1250.00000
0.300000012 , 1.14365840 , 1.12009621 , 1250.00000
0.500000000 , 0.768380523 , 0.940121233 , 1250.00000
1.00000000 , 1.26760149 , 1.92578197 , 700.000000
2.00000000 , 0.405723929 , 0.513782859 , 350.000000
3.00000000 , 0.136004776 , 0.220076859 , 233.500000