Temperature gradients in the overshooting zone of the same 5 M_⊙ main-sequence model as in Fig. 1. The blue and orange lines indicate the radiative (∇_rad) and adiabatic (∇_ad) temperature gradients, respectively. The dashed green line indicates the model temperature gradient, ∇, obtained from the 3-equation non-local convection model. The dashed black line indicates the Schwarzschild boundary, while the dotted black line indicates the boundary of the well-mixed overshooting region. The inset shows the three temperature gradients from the centre to the surface of the stellar model. The selected stellar model has a central hydrogen abundance of X_c = 0.6.