Hγ+[O III]λ4363 Å emission lines (black solid line) and best-fit model (red solid line). The fitting procedure includes the modeling of two additional emission lines (gray solid line), most likely the [O II]λ4317.2 Å and the [O II]λ4414.9 Å lines, using a single Gaussian function. The residuals of the fit are normalized and plotted below the spectrum (black dot-dashed line). The vertical dashed lines mark the restframe wavelength of the fitted emission lines. The [O III]λ4363 Å line is modeled using the [O III] model, and the Hγ line is modeled using both the [O III] model (top panel) and the Hβ model (bottom panel). The 1N and 2N components are plotted together with the green dotted line, the I component is shown with the golden dot-dashed line, and the VB component with the blue dashed line. The magenta triple dot-dashed line indicates the broad redshifted component of the Hβ model.