Table 3.
Color change of the wood during burial period

			L*	a*	b*
Korean red pine	Cross section	Control	75.48	21.93	14.40
		6 months	54.87	2.80	11.32
	Tangential section	Control	82.73	21.95	12.26
		6 months	43.32	4.10	6.00
Sawtooth oak	Cross section	Control	60.69	11.63	15.76
		6 months	34.61	4.29	7.02
	Tangential section	Control	66.47	10.15	10.86
		6 months	49.70	4.04	6.66

L*: the difference in lightness and darkness (+ indicates lighter, - indicates darker), a*: red (+) and green (-) color, b*: yellow (+) and blue (-) color.