Comparison of steady-state results for the simple, single-seed, fiducial model between the case where vapor has the same vertical distribution as the background gas (H_Z = H_gas) and the case where vapor has the same scale height as the pebbles (H_Z = H_peb). In all three panels, solid lines correspond to the H_Z = H_gas case and dashed lines correspond to the H_Z = H_peb case. a) Steady-state water ice (blue) and water vapor (green) surface densities. b) Midplane solids-to-gas ratios (green) and solids-to-gas surface densities ratios (blue). c) Typical pebble mass m_p.