Relations between line ratios and $L_{0.5-2\mathrm{keV}}^{\mathrm{gas}}$/SFR on sub-kiloparsec scales. The color scale represents the distance from the galactic center in kiloparsecs, and the marker size represents the SFR surface density. The solid line in the central panel indicates the best-fit scaling relation. The Spearman rank correlation coefficient (ρ_sp) and p-value are given in each panel.