Model Performance
#	Complexity	split	relative error	CV error	CV S.D.
1	0.326	0	1	1.012	0.11
2	0.059	1	0.674	0.758	0.092
3	0.039	2	0.615	0.729	0.088
4	0.023	3	0.577	0.757	0.098
5	0.023	4	0.553	0.768	0.099
6	0.017	5	0.53	0.774	0.095
7	0.014	6	0.513	0.759	0.096
8	0.01	7	0.498	0.758	0.098
9	0.01	8	0.488	0.743	0.097