Table 2.

ANOVA test showing the significance among the tested groups.

		Sum of squares	df	Mean square	F	Sig.
ΔL∗	Between groups	562.199	5	112.440	10.025	0.0001
	Within groups	605.640	54	11.216
	Total	1167.839	59
Δa∗	Between groups	10.163	5	2.033	1.861	0.116
	Within groups	58.967	54	1.092
	Total	69.130	59
Δb∗	Between groups	108.406	5	21.681	1.289	0.282
	Within groups	908.323	54	16.821
	Total	1016.729	59
ΔE	Between groups	198.698	5	39.740	3.880	0.004
	Within groups	553.084	54	10.242
	Total	751.782	59