Spotted area distribution on a stellar disk resulting in the highest polarization for two models at λ = 4450 Å: (a) T_eff = 3500 K, T_spot = 3000 K, and log g = 2.0, and (b) T_eff = 5100 K, T_spot = 3875 K, and log g = 2.0. The spotted area is shown with the darker color. For other stellar models, the highest possible polarizations are obtained at intermediate spot coverage with similar disk appearances, in which photosphere regions at the top and bottom vary between the two cases.