Escape fraction dependence on metallicity. Top: escape fraction as a function of metallicity. The symbols and ellipses represent the robust means and associated uncertainties of the MCMC draws for individual galaxies, weighted by the marginal likelihood of each configuration (see Sect. 4.3). The symbols and colors indicate the configuration having the highest marginal likelihood for each galaxy. The underlying KDE represents the distribution of all the MCMC draws for galaxies whose best model has N_sectors ≥ 2 only and ρ the associated Spearman correlation coefficient. Orange triangles represent galaxies for which the best model is a single component either density-bounded (DB) or radiation-bounded (RB). Their values correspond respectively to upper and lower limits of f_esc, HII. The white symbols that are flagged with a star correspond to two pointings in NGC 4214, which are excluded from the KDE. Bottom: KDE per bins of f_esc, HII for galaxies with at least two sectors.