Combination of initial entropies (S_init) and masses (shaded areas) for which the planet 1.6–4.8 μm photometries are reproduced by the warm-start models of Spiegel & Burrows (2012) within 1σ. Three boundary conditions are considered: with (hy) and without (cf) cloudy atmospheres, at solar (1s) and 3x solar (3s) metallicity. Initial entropies for the cold-start (filled circles) and hot-start (open circles) models of Marley et al. (2007) are overlaid.