Left: meridional cut from 0.6 to 1 R_⊙, of magnetic components for the reference BL dynamo model in anti-solar DR regime with C_S = 30 and D = 4.2 × 10⁶. Colors are mapped on a logarithmic scale for B_ϕ/B₀, and black continuous contours are positive A_ϕ iso-contours, i.e., B_pol clockwise-oriented field lines. Field lines above the surface r = 1 R_⊙ result from a potential extrapolation. Right: surface B_r butterfly diagram for the same model, where we clearly see the stationarity of the solution. As in Fig. 5, a logarithmic color scale has been chosen.