Table 3.

Multivariate factorial design.

	df	Mean Square	F value	P value
Power	1	334.54	92.21	<0.01
Incubation time	2	0.30	0.08	0.92
Illumination time	1	322.13	88.79	<0.01
Power × incubation time	2	0.23	0.06	0.94
Power × illumination time	1	339.35	93.54	<0.01
incubation time × illumination time	2	0.42	0.12	0.89
Power × incubation time × illumination time	2	0.52	0.14	0.87

df, degrees of freedom.