Results of the fitting of the Hβ lines. The continuum is already subtracted. The black and red solid lines indicate the observed spectra and best-fit model, respectively. The narrow component of Hβ line is fitted by using the nearby [O III] line at 5007 Å as a template, and the fitted narrow component is represented by the green dash-dotted line. The dashed blue lines represent the broad component (FWHM > 800km s⁻¹) of the Hβ line.