Some scatter plots to investigate possible correlations. Upper row: scatter plots of normalized hump amplitudes versus Stokes V amplitude asymmetry for the first spectral line. Lower row: scatter plots of hump amplitude versus the corresponding continuum intensity. Left column: Plot for the pixels in which the extra hump is seen on both the blue (black circles) and the red (gray circles) lobe. Right column: Plot for the pixels where the extra hump is seen on either the blue (black circles) or the red (gray circles) lobe.