Internal-check variation in boxed-heart square timber of sugi (Cryptomeria japonica) cultivars dried by high-temperature kiln drying

Table 5 Correlation coefficients between the internal-checking parameters and wood properties

Internal-checking parameter	MC_GT	α _T	α _R	α _T/α _R	BD	MOE_GT	RW	LWP	EWD	LWD
NIC	0.164	0.452**	0.221	0.130	0.307	0.242	−0.184	−0.166	−0.427**	−0.096
TLIC	0.278	0.480**	0.176	0.248	−0.274	0.164	−0.112	0.023	−0.255	0.017
TAIC	0.610***	0.658***	0.495**	−0.066	−0.139	0.497**	−0.500**	−0.054	−0.392*	0.361*
AAIC	0.590***	0.423**	0.439**	−0.206	0.099	0.359*	−0.395*	0.085	−0.063	0.386*

NIC number of internal checks, TLIC total length of internal checks, TAIC total area of internal checks, AAIC average area of internal checks
***P < 0.001, ** P < 0.01, * P < 0.05