Plane of P_line/P_cont − λ_Edd for sources from Capetti et al. (2021, marked as dots), Fairall 9 (labeled and marked as a star), and source from this work (with labels). Left panel: the color code is based on the viewing angle. We indicate Fairall 9 with the viewing angle measurement from Jiang et al. (2021) with a star and label it as Fairall (II). We indicate Fairall 9 with the viewing angle measurement based on the method from this work as a dot and label it as Fairall (I). The black point is the source J140336 from the sample of Capetti et al. (2021). We do not provide the viewing angle for this source since the FWHM_unpolarized > FWHM_polarized (see Eq. (6)). Middle: the same sample color coded with the FWHM of a broad Hα. The sources from Capetti et al. (2021) are plotted with a broad Hα measurement from Capetti et al. (2021), and Fairall 9 is plotted with a broad Hα measurement from Jiang et al. (2021). In the case of our sources (the three sources observed with VLT), we used measurements from Table 4. Right panel: the same sample color coded with R_FeII. The sources from Capetti et al. (2021) with R_FeII were calculated from Shen et al. (2011) values. The black points are sources: J154743 (no EW(Fe II) measurement in Shen et al. 2011) and J084600 (no EW(Hβ) BC and no EW(Fe II) measurement in Shen et al. 2011).