Pearson and Spearman correlation coefficients (ρ_ps: left panel; ρ_sp: right panel) of the KS laws derived for the different gas tracers used in this work as a function of the spatial resolution. Error bars represent the 67% confidence interval around the mean values. For spatial scales larger than the range identified by the grey-coloured region (≤350 pc) all the gas tracers (leaving aside CO(1–0)) show statistically significant correlations in their KS laws, defined by p-values < 1% and ρ_ps, ρ_sp > 0.4.