Star-formation efficiency of the dense gas (SFE_dense) as a function of the velocity dispersion of HCN (σ) in NGC 1068 for three averaging scales: 56 pc (left panel), 100 pc (middle panel), and 400 pc (right panel). Measurements at 100 pc scales are compared to literature data for other galaxies. Symbols are the same as in Fig. 17. Vertical and horizontal error bars at the lower-right corner of each panel account for the typical uncertainties, which amount to ±0.13 dex and ±0.06 dex, respectively.