Average dust-to-gas ratio in the midplane (top panel) and particle scale height as a function of gas scale height (bottom panel) with respect to time for all Stokes number ranges and size distribution exponents with N_p = 70 per cell. The initial particle scale height is H_p,init = 0.015H_g, except in thecase of the gray curves, where H_p,init = 1H_g. The metallicity is shown on the top axis. The top panel shows that ϵ is not significantly affected by the slope of the size distribution, but the short-time variations increase with τ_s,max. The bottom panel shows that the particle scale heights saturate closer to the midplane for small size ranges, but there is no clear trend for how H_p ∕H_g changes as a function of q and τ_s,max.