Vertical mass accretion onto the disk for runs R1 (blue) and R2 (red), obtained by integrating Eq. (4) over ϕ and time. Dash-dotted and dotted lines show accretion through the top (z = 8 AU) and bottom (z = −8 AU) surfaces, respectively; the solid lines are their sum. Solid vertical lines mark the disk’s minimum and maximum radii during the simulation. The dashed lines represent the cumulative fraction of landed mass (normalized to unity), plotted against the right-hand axis. This figure is complementary to Fig. 5.