Vertical profiles of the dust density ρ_dust normalized by the initial dust density at the midplane ρ_dust,ini(z = 0) (upper panel), and ratio of dust and gas densities ρ_dust/ρ_gas normalized by the initial dust-to-gas mass ratio Z_D2G (lower panel), at R = 40 au for a run with (Z_D2G, a)= (0.01, 10 μm) in the dynamic-dust simulations. In the upper panel, the dashed curve shows a Gaussian fitting of ρ_dust within |z|<H_dg, and the vertical dotted lines mark the height of the dust scale height H_dust. The horizontal dashed and dotted lines in the lower panel mark ρ_dust/ρ_gas = Z_D2G/2 and Z_D2G, respectively. The gray regions in both panels map the dust layer defined by H_dg.