Violin plots showing the distribution of molecular gas and star formation rate surface densities measured in 1 kpc apertures, as well as the resulting depletion times (τ_dep = Σ_mol/Σ_SFR). The different colours indicate the range of environments that we examine in this paper. The numbers on top of the violin plots indicate the median value in linear scale. The thick black bar inside each violin plot shows the interquartile range, the white dot indicates the median, and the thin black lines show the span of data points beyond the black bar that lie within 1.5 times the interquartile range.