Upper panels: visible projections of two bands between latitudes ± 5° and ± 30° on the stellar disk for three inclination values. The bands correspond to the solar distribution of spots employed here. The star sign indicates the position of the disk center. Lower panels: the fractional coverage of the stellar disk by spots plotted as functions of the impact parameter r/r_star (which is 0 at the disk centrer and 1 at the limb). The fractional coverage is calculated assuming that the two bands plotted in the upper panels are completely covered by spots.