Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.484	0	1	1.026	0.285
2	0.077	1	0.516	0.599	0.17
3	0.026	2	0.439	0.542	0.159
4	0.01	3	0.413	0.554	0.159