Distribution of galaxies at z < 0.063 in the BPT diagram, which classifies galaxies based on the emission-line flux ratios [O III] λ5007/Hβ and [N II] λ6584/Hα, is shown as a number-density plot in which darker regions indicate a higher density of data points. The dashed line indicates the demarcation defined by Equation (1) in Kauffmann et al. (2003), below which galaxies are classified as star-forming. The solid line represents the classification boundary given by Equation (5) in Kewley et al. (2001), above which galaxies are classified as AGNs. Galaxies located between the two lines are classified as composite, where both star-forming regions and AGNs contribute to the emission-line fluxes. Our 748 type 2 AGNs with log L_[O III] ≥ 40.8 are plotted as black circles. The colored symbols mark the median BPT positions of type 2 AGNs in bins of E(B − V) and L_[O III] (an indicator of AGN luminosity), where each symbol is plotted at the median values of [N II] λ6584/Hα and [O III] λ5007/Hβ for the AGNs in that bin. Different symbols and colors denote different bins. L_[O III] is in units of erg s⁻¹.