Time-averaged mass-flux filling factor evaluated at the convective boundary determined by the Schwarzschild criterion σ_mf, CB vs the overshooting depth in units of the pressure scale height at the convective boundary ℓ_ov/H_p, CB for all simulations described in Table 1. Error bars indicate one standard deviation around the time-averaged value of σ_mf, CB. Error bars obtained in the calculation of the overshooting depth ℓ_ov are smaller than the size of the data points.