Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.71	0	1	1.088	0.167
2	0.055	1	0.29	0.347	0.056
3	0.029	2	0.235	0.366	0.057
4	0.01	3	0.206	0.345	0.057