Parameters of the corona τ_cor and T_avg determined for a random sample of models are marked by open circles. The size of the points determines the accretion rate and color of the points corresponds to the magnetic field gradient (similar to Fig. 6) given on the right side of the figure. For models where the TI is present, the values of τ and T_avg computed at every point of the instability are displayed by thin lines. In the left panel, all models are shown, while in the right panel, models where the density inversion occurs (see Sect. 2.4) are filtered out. Additionally, data points from the literature are drawn using black markers listed on the right side of the figure. The data points clearly follow TI strips.