Pressure as a function of temperature for Z = 0.7 and M_P = 0.29 M_⊕. In the case where water is allowed to condense (orange lines), the vapour pressure follows the Clausius-Clapeyron curve until T = 282 K, which defines the loci where the vapour and liquid phases, and vapour and ice phases, can co-exist (green-dotted line). Hence, in these range of temperatures, water is being condensed, and the pressure-temperature profiles follow the moist adiabat.