Azimuthally averaged column density in the planes. The column densities are computed perpendicular to the orientation of the angular momentum vector for run IrrI1_t. The profiles correspond to the times represented in the projection plots in Fig. 6. Left panel: t₁ = 4 t_dyn (blue solid), t₂ = 8 t_dyn (green dashed), t₃ = 12 t_dyn (red dotted),t₄ = 16 (cyan solid), and t₅ = 20 t_dyn (purple dashed); right panel: t₆ = 24 t_dyn (blue solid), t₇ = 28 t_dyn (green dashed), t₈ = 32 t_dyn (red dotted),t₉ = 36 t_dyn (cyan solid), and t₁₀ = 39 t_dyn (purple dashed). The red dashed line corresponds to the profile of the MMSN, .