Table 2.

Two-way ANOVA test comparing dye penetration mean values (μm) of hybrid groups at different locations and storage times

Source of variation	df1	Sum-of-squares	Mean square	F	p-value
Margin site	2	2538000	1269000	8.335	0.0027
Storage time	2	3954000	1977000	12.98	0.0003
Residual	18	2741000	152300

¹Degree of freedom