xper,xns,xew,xco
0.100000001 , 90.0157394 , 46.0330391 , 1083.50000
0.200000003 , 54.0737801 , 31.3148308 , 1250.00000
0.300000012 , 27.3609219 , 12.9707508 , 1250.00000
0.500000000 , 9.39084339 , 5.60865450 , 1250.00000
1.00000000 , 2.06314063 , 1.27591920 , 700.000000
2.00000000 , 0.501400888 , 0.242252052 , 350.000000
3.00000000 , 0.208012074 , 0.114723928 , 233.500000