Top left panel: convective shifts predicted by the 3D hydrodynamical simulations for the Gaia RVS spectral range and the Fe I lines (see text for details). Top right panel: convective shifts from Fe I lines as a function of the effective temperature of the 3D simulations in Table B.1. Bottom left panel: convective shifts from Ca II lines. Bottom right panel: comparison of convective shifts for a selected number of RHD simulations from this work (stars) with simulations with equivalent stellar parameters from Allende Prieto et al. (2013) (circles). See Table 3 for details.