Dense gas relations with kiloparsec-scale environmental conditions. HCN/CO (top), a proxy of f_dense, and SFR/HCN (bottom), a proxy of SFE_dense, are shown as a function of stellar mass surface density (Σ_⋆), molecular gas surface density (Σ_mol), and dynamical equilibrium pressure (P_DE) across 31 galaxies from ALMOND and EMPIRE. The markers denote significant stacked measurements (S/N ≥ 3) across disc (circle) and centre (triangle) spaxels. The downward and upward pointing arrows denote upper (HCN/CO) and lower limits (SFR/HCN). Filled contours show 25, 50, and 75 percentile kernel density estimates. Across centres, we indicate the presence of an AGN (cross). All relations have been fitted with LinMix, taking measurement uncertainties and upper and lower limits into account (parameters in Table 2). The solid black line shows the best-fit line, and the grey-shaded area indicates the 1-sigma scatter of S/N ≥ 3 data. The right panels show violin plots of the HCN/CO and SFR/HCN distribution across the respective samples (disc, centre, centre with an AGN), where the black bar and white markers indicate the 25th to 75th percentile range and the median, respectively, across the S/N ≥ 3 data. The vertical cyan lines in the disc violins mark the median computed from all S/N data.