xper,xns,xew,xco
0.100000001 , 1.52784693 , 1.60353470 , 1083.50000
0.200000003 , 4.05709410 , 2.93899035 , 1250.00000
0.300000012 , 4.49553823 , 4.36324644 , 1250.00000
0.500000000 , 5.22702122 , 4.52957916 , 1250.00000
1.00000000 , 1.32452118 , 1.72647655 , 700.000000
2.00000000 , 0.690245450 , 1.25624025 , 350.000000
3.00000000 , 0.407402009 , 0.523962080 , 233.500000