Radial profile of the time and space averages of the trace of s², (solid blue lines) in the overshooting layer. The red dashed lines indicate the profile of the relative difference between the time/space average of the temperature ⟨⟨T⟩_θ⟩_t and the initial profile T₀. The convective boundary corresponding to the Schwarzschild boundary from the 1D initial model is indicated by the vertical solid line.