Distribution of the δE^LTE−3D (dashed lines) and δE^1D−3D (solid lines) values for the 525.02 nm (left panels) and the 630.15 nm line (right panels). The three vertically arranged panels contain the histograms for different spatial selections. Top panels: full atmosphere; Middle panels: areas with strong upflows (thin lines) and downflows (thick lines), the spatial points were selected if the vertical velocity at τ_c = 1 was higher than 3 km s^-1 in either direction. Bottom panels: the same as in the middle panels, but with the thick line now representing points at which the magnetic field strength | B_z | is stronger than 1 kG, and the thin line field strengths below 100 G. The number of selected spatial points in the middle and bottom panels amounts to approximately 10% to 20% of the whole atmosphere for each selection.