Resolved SRs for the galaxy NGC 6946 within r₂₅ at the resolution of 1 kpc, in logarithmic scale. From left to right: Σ_dust–Σ_H2, Σ_dust–Σ_HI, Σ_dust–Σ_tot gas, Σ_star–Σ_H2, Σ_star–Σ_dust, Σ_star–Σ_tot gas, Σ_star–Σ_SFR, Σ_H2–Σ_SFR, Σ_tot gas–Σ_SFR, Σ_bar–Σ_SFR. Two sets of data are shown when the H₂ gas is involved according to the two assumptions on X_CO (see the legends). The lines are the linear fits to the data: continuum line for the constant X_CO (Bolatto et al. 2013), dashed line for the metallicity-dependent X_CO (Amorín et al. 2016). Fit parameters are also given in the figures.