xper,xns,xew,xco
0.100000001 , 0.914046347 , 0.517078340 , 1083.50000
0.200000003 , 1.18389976 , 0.570510089 , 1250.00000
0.300000012 , 0.652203083 , 0.320443124 , 1250.00000
0.500000000 , 0.622980714 , 0.309234351 , 1250.00000
1.00000000 , 0.716824770 , 0.318344176 , 700.000000
2.00000000 , 0.968731940 , 0.597226024 , 350.000000
3.00000000 , 1.57643139 , 0.871525168 , 233.500000