Radiative acceleration profiles according to log(ΔM/M_*) (with ΔM being the mass above the radius r) obtained with MESA (A0 model, red solid lines), the Montreal/Montpellier code (B0 model, blue dashed lines) and CESTAM (C0 model, green dotted lines). The black solid line represent the gravity. The vertical grey dotted line represents the average position of the surface convective zone of the three models. The surface is towards the left part of the plots.