Table 2. Anova table of the seasonal diurnal and vertical effect on Fv/Fm in the nonlinear mixed model.

Parameter	Effect	numDF	denDF	F-value	p-value
A	(Intercept)	1	6851	57568.18	<0.001
	NN	1	6851	10.22	0.001
	TOD	2	6851	36.39	<0.001
B	(Intercept)	1	6851	3912.78	<0.001
	TOD	2	6851	225.52	<0.001
C	(Intercept)	1	6851	10843.96	<0.001
D	(Intercept)	1	6851	1723.03	<0.001
	TOD	2	6851	12.5	<0.001

a = amplitude of the Fv/Fm values; b = indicator of the width of the seasonal dip (expressed in DOY²); c = minimum Fv/Fm value;d = day of the year where the minimum Fv/Fm value was reached. NN = node number and TOD = time of the day. NumDF = numerator degrees of freedom; denDF = denominator degrees of freedom.