Comparison of linear and unsigned circular polarization with granulation images. Upper-left panel: cross-correlation of granulation and linear polarization in the FeI 630.25 nm line at μ = 0.66 (sinθ = 0.75) in the southern hemisphere. Upper-right panel: cross-correlation of granulation and unsigned circular polarization in the FeI 630.25 nm line at μ = 0.66 in the southern hemisphere. Lower-left panel: cross-correlation of granulation and linear polarization in the FeI 630.25 nm line at μ = 0.66 in the northern hemisphere. Lower-right panel: cross-correlation of granulation and unsigned circular polarization in the FeI 630.25 nm line at μ = 0.66 in the northern hemisphere.