Time evolution of averaged density ⟨ρ⟩ in (a), cumulative mass M_cum. in (b), specific angular momentum J² in (c), angular velocity ⟨Ω⟩ in (d), isothermal pressure scale height H in (e), the aspect ratio H/r in (f), the temperature T in (g), the column density Σ in (h), the ionization fraction of H_II (χ_HII), He_II (χ_HeII), and H_III (χ_HeIII) in (i), (j), and (k). Last, the average optical depth of cells τ_cell is shown in (l). The averages are taken over the range of r  ∈  [2a(t), 4 × 10³ R_⊙] (Sect. 3.3).