xper,xns,xew,xco
0.100000001 , 0.450367123 , 0.487588465 , 1083.50000
0.200000003 , 0.582428455 , 0.544572711 , 1250.00000
0.300000012 , 0.640788376 , 0.618062556 , 1250.00000
0.500000000 , 1.41449463 , 0.813730896 , 1250.00000
1.00000000 , 1.60265720 , 1.48113441 , 700.000000
2.00000000 , 0.380534410 , 0.472067177 , 350.000000
3.00000000 , 0.249801114 , 0.158898085 , 233.500000