Mean particle sizes, number densities and temperature profiles for our two model atmospheres. In the atmosphere with T_eff = 1500 K (T_eff = 2000 K), particle condensation starts at a pressure of 10^-2 bar (2 × 10^-3 bar). The horizontal lines in the left panel indicate the boundaries of the four particle types that we define for our radiative transfer calculations (see text and Fig. 2), which are different for the two atmospheres.