Table 2.

Influence of time of day and tepal position on volume and concentration of nectar (type III ANOVA). Indicated are the sum of squares (Sum sq.), d.f., F value and P value for the model with tepal position and time as main effects and interaction

Measure	Predictor	d.f.	Sum sq.	F value	P value
Volume	Time of day	1	2.77	7.00	0.009
	Tepal position	2	2.40	3.03	0.051
	Interaction	2	0.01	0.008	0.99
	Residuals	117	46.29
Concentration	Time of day	1	116	3.26	0.07
	Tepal position	2	92	1.31	0.27
	Interaction	2	27	0.38	0.68
	Residuals	95	3358