xper,xns,xew,xco
0.100000001 , 0.787183881 , 0.582136214 , 1083.50000
0.200000003 , 0.728052735 , 0.716526330 , 1250.00000
0.300000012 , 1.14376652 , 1.12175584 , 1250.00000
0.500000000 , 0.768301129 , 0.942017138 , 1250.00000
1.00000000 , 1.26759887 , 1.92412341 , 700.000000
2.00000000 , 0.405742615 , 0.515578866 , 350.000000
3.00000000 , 0.135790601 , 0.218330845 , 233.500000