Meridional cuts of the normalised differential rotation δΩ/Ω₀ and of the toroidal field B_ϕ, obtained during the post-instability evolution at ∼3.5τ_c (first two panels), and when the hydrodynamic steady state is reached at ∼4.66τ_c (last two panels). Black contours represent either the poloidal field lines (first and third panels) or the streamlines associated with the electrical-current function (second and fourth panels). The parameters are E = 10⁻⁴, P_r(N₀/Ω₀)² = 10⁴, P_m = 10², Re_c = 1, and L_u = 10⁴ (run Q10 of Table 1).