xper,xns,xew,xco
0.100000001 , 1.28734660 , 1.05779207 , 1083.50000
0.200000003 , 1.25839901 , 1.29991579 , 1250.00000
0.300000012 , 0.941364229 , 0.848033845 , 1250.00000
0.500000000 , 1.48251259 , 1.27106762 , 1250.00000
1.00000000 , 2.49328136 , 1.88091266 , 700.000000
2.00000000 , 0.607749820 , 0.446414888 , 350.000000
3.00000000 , 0.260654330 , 0.137108132 , 233.500000