LFs for H II regions in spiral arm and inter-arm areas. Galaxies are ordered according to increasing stellar mass from top left to bottom right, and their names are indicated within each panel. For the 13 galaxies that show evident spiral arms, the LF and the best fitting model are shown in red and blue for H II regions located in spiral arms and inter-arms areas, respectively. For the remaining galaxies, the LF and the best fitting model refer to the H II regions located in the entire disk, excluding the areas occupied by the bars, and are drawn in black. The dashed and solid lines indicate the empirical LF and the best fitting model, respectively. The LF slopes are reported in the top-right corner of each panel following the same color scheme.