Notes. Columns: (1) Source name; (2) S/N measured in the 5100 Å continuum; (3) values multiplied to the FWHMs of [O III]λλ4959,5007 for the χ² calculation; (4) FWHM of the Hβ profile [km s⁻¹]; (5) FWHM of the Hβ broad component [km s⁻¹]; (6) square root of the second-order moment as in Eq. (1) [km s⁻¹]; (7) Hβ flux [×10⁻¹⁵ erg s⁻¹ cm⁻²]; (8) Hβ broad flux [× − 10⁻¹⁵ erg s⁻¹ cm⁻²]; (9) flux density at 5100 Å [×10⁻¹⁷ erg s⁻¹ cm⁻² Å⁻¹]; (10) flux density at 5100 Å on SDSS spectra [×10⁻¹⁷ erg s⁻¹ cm⁻² Å⁻¹]; (11) flux ratio between Fe IIλ4570 multiplets and Hβ; (12) internal extinction as in Eq. (2).