Sensitivity of inflection point to inclination of stellar rotation axis. Plotted is the dependence of the inflection point position (given as a fraction of the rotation period, P_rot = 30 d) on the ratio between facular and spot disk-area coverages at the time of maximum area, S_fac ∕S_spot. Each S_fac∕S_spot value corresponds to five realizations calculated with inclination φ = 90° (equatorial view, blue), φ = 57° (black), and φ = 45° (red). Red, black, and blue lines show positions of the inflection points averaged over the five corresponding realizations.