Variation of predicted disk-integrated line strengths, as inferred from a snapshot from the hydrodynamical simulation downsampled from the original 240² grid points as well as the horizontally averaged ⟨ 3D ⟩ and hydrostatic 1D case. A vertical dashed line separates the 3D results from the 1D hydrostatic and ⟨ 3D ⟩ results. Calculations in NLTE (black diamonds) and LTE (blue squares) are illustrated for representative lines using A(Li) = 0.70, A(Na) = 0.89, A(Mg) = 3.80, A(Al) = 1.15, A(Ca) = −0.62, and A(Fe) = 0.60. When additional snapshots have been computed (at resolution 60²), their individual results are indicated by horizontal lines. A red greek cross indicates the corresponding NLTE result computed in the so-called 1.5D approximation (at resolution 60²). Each panel spans over 0.35 dex, except for Al and Fe due to their very strong NLTE effects. For clarity, the line strength determined from the highest-resolution model is indicated as a horizontal dashed line across each panel, and representative errors of 0.03, 0.06 and 0.09 dex are indicated by gray shaded regions.