Example of BPT diagrams for a galaxy with the circumnuclear region classified as AGN type. Panel a: locations of the spaxels with the AGN-like, H II-region-like, and intermediate spectra on the image of the MaNGA galaxy M-7495-12704 in sky coordinates (pixels, the physical scale is 0.309 kpc pixel⁻¹). The BPT type of the spectra is color-coded. The spaxels with the intermediate spectra in the circumnuclear region (center) and in the disc are shown by different colors. The circle marks the kinematic center of the galaxy. Panel b: map of the observed (non corrected for instrumental profile) gas velocity dispersion. The value of gas velocity dispersion is color-coded. Panel c: BPT diagram for the individual spaxels with AGN (black symbols) and intermediate (red symbols) spectra classification in the circumnuclear region. The thick solid line is the Y_BPT = aX_BPT + b relation obtained for those data. Solid and short-dashed curves mark the demarcation line between AGNs and H II regions defined by Kauffmann et al. (2003) and Kewley et al. (2001), respectively. The long-dashed line is the dividing line between Seyfert galaxies and LINERs defined by Cid Fernandes et al. (2010). The blue points are the H II-region-like spectra in the galaxy. Panel d: same as panel b but for the spaxels with the intermediate-type spectra located in the disc.