xper,xns,xew,xco
0.100000001 , 1.88052833 , 2.74739909 , 892.650024
0.200000003 , 3.30403018 , 3.79840684 , 1031.25000
0.300000012 , 4.59363699 , 2.71877313 , 1031.25000
0.500000000 , 2.70801950 , 3.65987515 , 1031.25000
1.00000000 , 1.84231758 , 1.66375828 , 562.650024
2.00000000 , 0.604047298 , 0.529544711 , 281.325012
3.00000000 , 0.144288465 , 0.142105386 , 187.688004