Probability of Ṁ_ζ being within a factor of ten of Ṁ_hc as a function of different planetary parameters. Top: plotted as a function of Λ and ΔT_{0 K}, i.e. the linear temperature gradient between the 0 K minimum of the energy-limited temperature profile and the XUV absorption height. Middle: plotted as a function of the gravitational potential of the planet corrected for tidal effects (Φ_grav) and T_eq. Bottom: plotted as a function of Φ_grav and Φ_XUV. For all panels the probabilities are computed considering planets lying within 30 bins of each parameter, except for the equilibrium temperature. Here just 17 bins have been considered as only 18 distinct values of T_eq are represented in the planetary grid. Bins comprising fewer than ten planets have been discarded.