Table 3.

Variance analysis results

Variance source	Sum of square	Degree of	F ratio	P
	of deviations	freedom
A	10.133	2	20.512	<0.05
B	1.926	2	3.899	>0.05
C	1.635	2	3.310	>0.05
D	0.494	2	1.000	>0.05

P<0.05 means significant difference