Table 2.
Information on the tree-ring widths of Zelkova serrata by resistograph

ID	No. of measured direction	Number of tree rings	Tree-ring width (mm)
			Minimum	Mean	Maximum
			CBGSZS12	2	68	1.59	4.55	8.47
CBGSZS13	1	43	1.59	3.18	6.35
CBGSZS14	2	60	2.12	5.09	10.58