S-curves for 10⁷ M_⊙ at r = 100 R_S for two values of turbulent parameter α_cold = 0.01 (blue) and α_hot = 0.1 (orange). The branches ‘A-zone’ and ‘Advection’ were calculated using the code from Lipunova (1999). The accretion rate in absolute units shown on the left axis and in the Eddington rates (1), on the right (upper panel). Temperature T_c in the symmetry plane (middle panel). The dashed line shows the S-curve for α_cold without convection. Relative semi-thickness z/r (bottom panel).