Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.261	0	1	1.041	0.152
2	0.054	1	0.739	0.772	0.128
3	0.027	3	0.631	0.871	0.15
4	0.022	4	0.604	0.873	0.15
5	0.01	5	0.582	0.856	0.149