Center-to-limb variation of polarization for the pure scattering atmosphere. The solid line is obtained for stellar model with T_eff = 5800 K and log g = 1.5 at 4000 Å. Two other curves (dashed and dotted-dash) are for the models with the same log g = 4.5 but different effective temperatures, 4000 K and 5800 K at 4000 Å and 7000 Å, respectively. The star symbols indicate the solution for plane-parallel atmosphere obtained by Chandrasekhar (1960).