Diagram of log(N/O) vs. 12+log(O/H) for the HII regions in our sample of LINERs. From top to bottom, the first row shows diagrams for all HII regions in all LINERs; the second row shows diagrams for those HII regions in LINERs with no breaks in the 12+log(O/H) radial fit; the third row shows diagrams for HII regions in LINERs with one break; and the fourth row shows diagrams for HII regions in LINERs with two breaks. Each column shows different colorbared properties: normalized distance to the galaxy centers (left), equivalent width of H_α (middle) and ionization parameter (right). For all plots, the solid back line represents the fit provided by Coziol et al. (1999), the dotted line shows the fit by Andrews & Martini (2013), and the dash-dotted line shows the fit by Belfiore et al. (2015).