Relative density of planets as a function of the distance to the closest MMR (left). Resonant chains and single planets are arbitrarily set at Δ_MMR = 0.001 and 100, respectively. The colors indicate the method used to obtain the mass. The dark grey area indicates the 1σ confidence interval for the local mean value of ρ_rel, while the dotted lines show a local estimation of its scatter. Distribution of relative densities assuming gaussian distributions, binning by method and distance to the resonance (right): resonant, nearly resonant (0.001 < Δ_MMR < 0.05), non resonant (0.05 < Δ_MMR), and single planets.