Snapshots of the location of the particles (blue dots) 2.5 orbits after they were inserted at the midplane into the fully developed VSI hydrodynamic model, for four values of St₀. The coordinates are the cylindrical radius R in units of, and relative to, r₀, and the cylindrical vertical height z above the midplane in units of r₀. The background image shows the vertical gas velocity v_z, where blue is upward and red is downward, in the same color scale as in Fig. 1. The gray dotted lines show the gas pressure scale height for comparison. The lightblue dashed lines are the conveyor-belt estimate of the maximum vertical height of the dust particles, Eq. (2) with an upper cap at z = h_p (which is why the dashed and dotted lines overlap for St₀ = 0.01).