BLR structures in 3C 120 (for three epochs), NGC 7469, NGC 3783, NGC 5548 (for two and 13 epochs), and 3C 390.3 as a function of distance to the center and height above the midplane (based on corrected turbulent velocities v_turb). The highly ionized (non-Balmer) lines of the individual galaxies are connected by a solid line. The Hβ emitting regions are drawn in red. The three Hβ line-emitting regions of 3C 120 are connected by a dot-dashed red line and those of NGC 5548 (13 epochs) are connected by a solid red line.