Table 10. One-way ANOVA for the Cd, Cr and Pb content by timber harvesting and processing methods.

Source	DF	Sum of squares	Mean squared	F-value	Prob>F
As	3	0.003	0.001	10.462	0.004
Cd	3	28.932	9.644	42.124	0.001
Cr	3	1.143	0.381	22.508	0.001