KCl cloud structures using the log g = 3.25 (left) and log g = 4.25 (right) Y-dwarf temperature-pressure profiles from Gao et al. (2018) and assuming a constant K_zz = 10⁸ cm² s⁻¹. The dashed lines show the monodisperse size distribution and the solid lines the exponential size distribution results. The top panel shows the temperature-pressure profiles with the mass mixing ratio of the condensate, q_c, vapour, q_v, and saturation point, q_s. The middle panel shows the mean particle size, r_c, and total number density, N_c. The bottom panel shows the relative difference in r_c and N_c between the monodisperse and exponential cloud structure.