Global Beff for Hβ. Top: for our samples of six AGNs, we plot the Hβ line EW and continuum luminosity at 5100 Å  (dots surrounded with contours). The corresponding averaged line EW and continuum luminosity is denoted with a circle for each object. The best-fitting of all the measurements for the six objects is shown with the solid line. Bottom: averaged values of the six studied objects (circles), together with the sample of 21 416 AGNs measured by Shen et al. (2011; dots) and 90 low-luminosity AGNs from La Mura et al. (2007; crosses). The best-fitting of all data is shown with the solid line.