(a): Correlation between dust temperature and gas excitation (traced by R₃₁). (b): Correlation between dust temperature and dense and warm gas fraction, denoted by HCN (4 − 3)/CO (1 − 0) and HCO⁺ (4 − 3)/CO (1 − 0) integrated intensity ratios. Black circles denote the central position of NGC 1068, which hosts the AGN. The Spearman rank correlation coefficients are shown at each panel.