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Table IV

Probability values (P) of the ANCOVA analyses to test for differences in the Y-intercept and slope of the equations of the four Quercus species when each leaf stage was considered separately (n = 30 per species in each leaf stage). A significant interaction indicates differences in slope; only if the interaction is not significant can differences in the Y-intercept (species factor) be interpreted.

Species CCI Interaction
Young leaves < 0.0001 < 0.0001 0.0815
Fully expanded leaves < 0.0001 < 0.0001 < 0.0001
Mature leaves < 0.0001 < 0.0001 0.3706