Resolved log(EW(Hβ)) versus log(σ(Hα)) for UM 462 (upper panel) and IIZw40 (lower panel). The colour code represents the regions of the galaxies divided into different Σ(Hα) bins of 37–< 38 (purple), 38–< 39 (blue), 39–< 40 (green), 40–< 41 (cyan), 41–< 42 (orange), and 42–< 43 (red) in units of log erg s⁻¹ kpc⁻². The dotted horizontal lines indicate the classification proposed by Lacerda et al. (2018), where HOLMES DIG-dominated regions have EW(Hα) < 3 Å (lower dashed line), and HII-dominated areas have EW(Hα) > 14 Å (upper dashed line). The black data points correspond to the mean values within the different Σ(Hα) bins. The central and vertical bands clearly correspond to the HII-dominated regions, whereas the more disturbed, extended bands are those associated with the DIG-dominated areas.