Molar ratio of atoms O, C, N, and S relative to the total mass of gas H₂ in planets as a function of the total mass of planets and mass ratio of solids relative to total planetary mass , for all models. Horizontal gray lines represent abundances of atoms adopted in the ISM. Gray dots J and S represent, respectively, the abundances for Jupiter and Saturn. Data for Jupiter and Saturn provided by Wong et al. (2004), Flasar et al. (2005), Orton et al. (2005), and Briggs & Sackett (1989). The light gray area on the right corresponds to the zone where the mass of planets is higher than 13 Jovian masses and where there could be more brown dwarfs than giant planets.