J/ApJS/264/52/table3Catalog of quasar propertiesPlateSpectroscopic plate numbermeta.id;instr.plateintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharSDSSSDSS designation (HHMMSS.ss+DDMMSS.s; J2000.0) (1)meta.id;meta.maincharFiberSpectroscopic fiber numbermeta.id;instr.setupintz[0.001/7.1]? Best redshift taken from DR16Qsrc.redshift;pos.heliocentricdoublenullablezOIII[0.01/0.9]? The [OIII]5007{AA} based redshiftsrc.redshift;pos.heliocentricdoublenullablezMgII[0.3/2.5]? MgII2799{AA} based redshiftsrc.redshift;pos.heliocentricdoublenullablezCIV[1.5/5.1]? CIV1548{AA} based redshiftsrc.redshift;pos.heliocentricdoublenullablelogL5100[37.8/46.2]? Monochromatic luminosity at 5100{AA}log(1e-07W)phys.luminosity;em.optdoublenullablee_logL5100[0/122]? Uncertainty in logL5100log(1e-07W)stat.errordoublenullablelogL3000[41.7/47.5]? Monochromatic luminosity at 3000{AA}log(1e-07W)phys.luminositydoublenullablee_logL3000[0/159]? Uncertainty in logL3000log(1e-07W)stat.errordoublenullablelogL1350[43.8/47.6]? Monochromatic luminosity at 1350{AA}log(1e-07W)phys.luminositydoublenullablee_logL1350[0/2.4]? Uncertainty in logL1350log(1e-07W)stat.errordoublenullablelogMBH-Ha[3.8/9.8]? Virial BH mass from H{alpha} linelog(solMass)phys.massdoublenullablee_logMBH-Ha[0/8.5]? Uncertainty in logMBH-Halog(solMass)stat.errordoublenullablelogMBH-Hb[3.9/9.9]? Virial BH mass from H{beta} linelog(solMass)phys.massdoublenullablee_logMBH-Hb[0/61]? Uncertainty in logMBH-Hblog(solMass)stat.errordoublenullablelogMBH-MgII[6.5/10.5]? Virial BH mass from MgII 2799{AA} linelog(solMass)phys.massdoublenullableW-bMgII[1.2/390.1]? Rest-frame equivalent width of broad MgII emission line0.1nmspect.line.eqWidthdoublenullablee_W-bMgII[0/183]? Uncertainty in W-bMgII0.1nmstat.errordoublenullableFWHM-bMgII[964/11077]? FWHM of broad MgII emission linekm/sspect.line.widthdoublenullablee_logMBH-MgII[0/99]? Uncertainty in logMBH-MgIIlog(solMass)stat.errordoublenullablelogMBH-CIV[7/10.6]? Virial BH mass from CIV 1548{AA} linelog(solMass)phys.massdoublenullablee_logMBH-CIV[0/3.3]? Uncertainty in logMBH-CIVlog(solMass)stat.errordoublenullablelogL-bHa[37.3/44.2]? Line luminosity of broad H{alpha} emission linelog(1e-07W)phys.luminosity;em.line.Halphadoublenullablee_logL-bHa[0/0.8]? Uncertainty in logL-bHalog(1e-07W)stat.errordoublenullableW-bHa[3.5/1584]? Rest-frame equivalent width of broad H{alpha} emission line0.1nmspect.line.eqWidthdoublenullablee_W-bHa[0/159]? Uncertainty in W-bHa0.1nmstat.errordoublenullableFWHM-bHa[1094/17272]? FWHM of broad H{alpha} emission linekm/sspect.line.widthdoublenullablee_FWHM-bHa[0/7376]? Uncertainty in FWHM-bHakm/sstat.errordoublenullablelogL-nHa[39.4/43.2]? Line luminosity of narrow H{alpha} emission linelog(1e-07W)phys.luminosity;em.line.Halphadoublenullablee_logL-nHa[0/0.3]? Uncertainty of logL-nHalog(1e-07W)stat.errordoublenullableW-nHa[0.9/828]? Rest-frame equivalent width of narrow H{alpha} emission line.0.1nmspect.line.eqWidthdoublenullableFWHM-nHa[198/1191]? FWHM of narrow H{alpha} emission linekm/sspect.line.widthdoublenullablelogL-NIIa[36.9/42.7]? Line luminosity of [NII]6549{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-NIIa[0/1.4]? Uncertainty in logL-NIIalog(1e-07W)stat.errordoublenullableW-NIIa[0.3/49.1]? Rest-frame equivalent width of [NII]6549{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-NIIa[0/32.1]? Uncertainty in W-NIIa0.1nmstat.errordoublenullablelogL-NIIb[37.4/43.2]? Line luminosity of [NII]6585{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-NIIb[0/1.4]? Uncertainty of logL-NIIblog(1e-07W)stat.errordoublenullableW-NIIb[1/146]? Rest-frame equivalent width of [NII]6585{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-NIIb[0/96]? Uncertainty in W-NIIb0.1nmstat.errordoublenullablelogL-SIIa[39.2/42.7]? Line luminosity of [SII]6718{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-SIIa[0/0.8]? Uncertainty in logL-SIIalog(1e-07W)stat.errordoublenullableW-SIIa[0.3/89]? Rest-frame equivalent width of [SII]6718{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-SIIa[0/8]? Uncertainty in W-SIIa0.1nmstat.errordoublenullablelogL-SIIb[39/42.6]? Line luminosity of [SII]6732{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-SIIb[0/0.7]? Uncertainty in logL-SIIblog(1e-07W)stat.errordoublenullableW-SIIb[0.4/85.1]? Rest-frame equivalent width of [SII]6732{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-SIIb[0/11]? Uncertainty in W-SIIb0.1nmstat.errordoublenullablech2Ha[0.4/106]? Reduced {chi}^2^ for emission-line fits in H{alpha} spectral regionmeta.notedoublenullableNpixHa[210/264]? Number of good pixels in the range of 6400-6800{AA}meta.numberdoublenullableSNHa[2/95]? Median SNR per pixel in the range of 6400-6800{AA}stat.snrdoublenullablealphaHa[-3.6/6.6]? Power-law slope of continuum in H{alpha} spectral regionspect.indexdoublenullablelogL-bHb[36/44.3]? Line luminosity of broad H{beta} emission linelog(1e-07W)phys.luminosity;em.line.Hbetadoublenullablee_logL-bHb[0/0.5]? Uncertainty in logL-bHblog(1e-07W)stat.errordoublenullableW-bHb[3.6/271]? Rest-frame equivalent width of broad H{beta} emission line0.1nmspect.line.eqWidthdoublenullablee_W-bHb[0.2/34]? Uncertainty in W-bHb0.1nmstat.errordoublenullableFWHM-bHb[1098/15784]? FWHM of broad H{beta} emission linekm/sspect.line.widthdoublenullablee_FWHM-bHb[0/3934]? Uncertainty in FWHM-bHbkm/sstat.errordoublenullablelogL-nHb[35.6/44]? Line luminosity of narrow H{beta} emission linelog(1e-07W)phys.luminosity;em.line.Hbetadoublenullablee_logL-nHb[0/0.2]? Uncertainty in logL-nHblog(1e-07W)stat.errordoublenullableW-nHb[0.2/178]? Rest-frame equivalent width of narrow H{beta} emission line0.1nmspect.line.eqWidthdoublenullableFWHM-nHb[35/1184]? FWHM of narrow H{beta} emission linekm/sspect.line.widthdoublenullablelogL-OIIIa[36/43.6]? Total luminosity of narrow and broad [OIII]4959{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-OIIIa[0/0.6]? Uncertainty in logL-OIIIalog(1e-07W)stat.errordoublenullableW-OIIIa[0.1/747]? Rest-frame equivalent width of [OIII]4959{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-OIIIa[0/34]? Uncertainty in W-OIIIa0.1nmstat.errordoublenullablelogL-OIIIb[36.5/44.1]? Total luminosity of narrow and broad [OIII]5007{AA} emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-OIIIb[0/0.6]? Uncertainty in logL-OIIIblog(1e-07W)stat.errordoublenullableW-OIIIb[0.2/2262]? Rest-frame equivalent width of [OIII]5007{AA} emission line0.1nmspect.line.eqWidthdoublenullablee_W-OIIIb[0/102]? Uncertainty in W-OIIIb0.1nmstat.errordoublenullablech2-Hb[0.4/43.7]? Reduced {chi}^2^ for emission-line fits in H{beta} spectral regionmeta.notedoublenullableNpix-Hb[213/355]? Number of good pixels in the range of 4700-5100{AA}meta.numberdoublenullableSN-Hb[2/103]? Median SNR per pixel in the range of 4700-5100{AA}stat.snrdoublenullablealpha-Hb[-5.3/5.4]? Power-law slope of continuum in H{beta} spectral region.spect.indexdoublenullablelogL-bMgII[41/45.3]? Line luminosity of broad MgII emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-bMgII[0/1]? Uncertainty in logL-bMgIIlog(1e-07W)stat.errordoublenullablelogL-MgII[41.2/45.3]? Total luminosity of broad and narrow MgII emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-MgII[0/1]? Uncertainty in logL-MgIIlog(1e-07W)stat.errordoublenullablee_FWHM-bMgII[0/3895]? Uncertainty FWHM-bMgIIkm/sstat.errordoublenullablech2-MgII[0.3/164]? Reduced {chi}^2^ for emission-line fits in MgII spectral regionmeta.notedoublenullableNpix-MgII[479/792]? Number of good pixels in the range of 2500-3000{AA}meta.numberdoublenullableSN-MgII[1/88]? Median SNR per pixel in the range of 2500-3000{AA}stat.snrdoublenullablealpha-MgII[-6.3/7.2]? Power-law slope of continuum in the MgII spectral regionspect.indexdoublenullablelogL-bCIV[42.2/45.6]? Line luminosity of broad CIV emission linelog(1e-07W)phys.luminosity;spect.linedoublenullablee_logL-bCIV[0/1.1]? Uncertainty in logL-bCIVlog(1e-07W)stat.errordoublenullableW-bCIV[0.8/841]? Rest-frame equivalent width of broad CIV emission line0.1nmspect.line.eqWidthdoublenullablee_W-bCIV[0/1554]? Uncertainty in W-bCIV0.1nmstat.errordoublenullableFWHM-bCIV[1094/16591]? FWHM of broad CIV emission linekm/sspect.line.widthdoublenullablee_FWHM-bCIV[0/7769]? Uncertainty in FWHM-bCIVkm/sstat.errordoublenullablech2-CIV[0.3/515]? Reduced {chi}^2^ for emission-line fits in CIV spectral regionmeta.notedoublenullableNpix-CIV[229/562]? Number of good pixels in the range of 1450-1650{AA}meta.numberdoublenullableSN-CIV[0.6/70]? Median SNR per pixel in the range of 1450-1650{AA}stat.snrdoublenullablealpha-CIV[-10.3/7.4]? Power-law slope of continuum in the CIV spectral regionspect.indexdoublenullablePapIIDisplay data from Paper II (Chen+, 2019, J/ApJS/244/36)meta.ref.urlintnullableSpInteractive spectrum from SDSS-DR16meta.ref.urlchar_RAPositions from SDSS names (right ascension part)degpos.eq.ra;meta.mainindexed_DEPositions from SDSS names (declination part)degpos.eq.dec;meta.mainindexedMJD[55176/58543] Modified Julian datetime.epochintindexed