Modeled I_CO and I_HCN compared with the measured intensities of the Paper I sample (solid contours) and the EMPIRE sample (dashed contours Jiménez-Donaire et al. 2019). The blue filled contours are models whose Σ and σ_v are taken from the PHANGS sample (Sun et al. 2020), the orange filled contours are those taken from NGC 4038/9 (Brunetti et al. 2024), and the green filled contours are those taken from NGC 3256 (Brunetti et al. 2021). Ten contours are drawn in even steps from the 16–100th percentile.