[O III]λλ4958,5007 Å doublet (black solid line) and the [O III] model (red solid line). The [O III] model includes two narrow components (1N and 2N component, green dotted line), one intermediate component (I component, yellow dot-dashed line), and one very broad component (VB component, blue dashed line). The residuals of the fit are normalized and plotted below the spectrum (black dot-dashed line). The vertical dashed line marks the restframe wavelength of the emission lines. The inset in the top left part of the plot shows a zoom-in of the I and VB components.