Convective blueshift derived for the basal Log (dashed line), adapted from Meunier et al. (2017b), and scaled with the solar values derived in Meunier et al. (2017a). The solid line shows the local convective blueshift we used in our model, after correction for projection effects for a constant attenuation of the convective blueshift in plages of 0.38 (see text). The dotted line shows the same parameter when the trend of the attenuation factor vs. T_eff is taken intoaccount.