FWHM}_{\rm M}$}}$ and $V = {\mbox{$\sigma_{\rm M}$}}$ to remove the worst outliers from the line-width comparisons discussed in §[\[section:hblinewidths\]]{} and §[\[section:civfundamental\]]{}.

Finally, we removed quasars that were flagged by [@Shen19] as having broad absorption lines (BALs), mini-BALs, or suspected BALs in .

The effect of each quality cut on the size of the database available for each emission line is shown in Table 1. Of the 44 SDSS-RM quasars with measured  lags, 12 failed to meet at least one of the quality criteria, usually the $S/N$ requirement, thus reducing the SDSS-RN  sample to 32 quasars. Three quasars with  reverberation measurements (RMID 362, 408, and 722) were rejected for significant BALs, thus reducing the SDSS-RM  reverberation sample to 45 quasars. As we will show in §[\[section:massformulae\]]{}, another effect of imposing quality cuts is, not surprisingly, that it removes some of the lower luminosity sources from the sample.

[lcc]{} Original sample & 221 & 540\
(a) Minimum Line Width (eq. \[eq:minwidth\]) & 199 & 520\
(b) Consistency (eq. \[eq:consistency\]) & 194 & 368\
(c) $S/N$ (eq. \[eq:s2n\]) & 121 & 462\
(a) + (b) & 174 & 352\
(a) + (c) & 108 & 450\
(b) + (c) & 107 & 309\
