Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.103	0	1	1.007	0.012
2	0.031	1	0.897	0.959	0.039
3	0.023	2	0.866	0.997	0.051
4	0.018	5	0.796	1.071	0.059
5	0.01	7	0.761	1.033	0.063