SFR surface density (Σ_SFR) as a function of the dense molecular gas surface density (Σ_dense) derived from HCN(1–0) for the different resolutions explored in this work: 56 pc, 100 pc, 200 pc, 300 pc, 400 pc, 500 pc, 600 pc and 700 pc. The red lines show the ODR fits to the data. The dashed lines identify the correlations that are not found to be statistically significant. We only show on both axes the data points above 3σ that are considered in the fits. We indicate the Spearman’s rank correlation coefficients (ρ_sp) and the power-law indexes (N) of the best fits. Vertical and horizontal error bars at the lower-right corner of each panel account for the typical uncertainties, which amount to ±0.09 dex on both axes.