Multicomponent empirical specfit analysis, including the AD model fitting result in the Hβ region after subtracting the continuum from the best fit. The upper abscissa is the rest-frame wavelength in Å and the lower abscissa is in radial velocity units. The vertical scale corresponds to the specific flux in units of 10⁻¹⁵ ergs s⁻¹ cm⁻² Å⁻¹. The emission line components used in the fit are FeII (green), the broad AD model representing the fit for the broad double-peaked profile (red line), SBC (orange), and NC (blue). The black continuous line corresponds to the rest-frame spectrum. The dashed magenta line shows the final fitting from specfit. The dot-dashed vertical lines trace the rest-frame wavelength of Hβ. The lower panel shows the residual of the empirical fit.