Average line intensity, I_Line, as a function of surface densities of molecular gas mass (Σ_mol), stellar mass (Σ_*), and star-formation rate (Σ_SFR), as well as velocity dispersion (σ_CO), dynamical equilibrium pressure (P_DE), and galactocentric radius for all dense gas tracers. Shaded areas mark the standard deviation per bin. The ¹²CO intensity scaled by a factor of 1/10 is added for comparison (gray line). For r > 2.2 kpc, the shape of our FoV leads to incomplete sampling of these radial bins (gray shaded area). The obtained slopes for a linear fit (in log space) to the binned averages are provided in each panel.