Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.371	0	1	1.073	0.164
2	0.083	1	0.629	0.775	0.154
3	0.032	2	0.546	0.808	0.164
4	0.01	4	0.482	0.806	0.162