Virial factor f_σ derived from the DyBEL BLR fitting using σ-derived SMBH masses, as a function of the Hα line shape (left panel), the inclination angle in degrees (middle panel), and the opening angle in degrees (right panel). The average 1σ uncertainties are shown on the upper right of each panel. The orange dashed horizontal line and its 1σ range refer to f = 4.47, the virial factor in the scaling relations of Woo et al. (2015) from which we derived the SMBH masses to use as input to the fitting procedure. The blue dashed horizontal line and its 1σ range refer to the average Hα virial factor from our modelling: ⟨f_{σ,  Hα}⟩=1.44. For comparison, we plot the data points from Villafaña et al. (2023) together with a black solid line and a grey region denoting the best-fit relation and its intrinsic scatter.