Mach	Xcp
0	0.90434
0.3	0.89132
0.5	0.88264
0.8	0.84823
0.99	0.82994
1.01	0.81785
1.2	0.76143
1.5	0.9
1.8	1.10026
2	1.15854
3	1.49489
4	1.70848