Primary System Type	ST1 Confidence Flag	Secondary System Type	ST2 Confidence Flag	Tertiary System Type	ST3 Confidence Flag	Literature Name	Selection Method	Confirmation Method	Name1	z1	z1_type	AGN_type1	RA1	Dec1	Equinox1	Coordinate_waveband1	Coordinate_Source1	Name2	z2	z2_type	AGN_type2	RA2	Dec2	Equinox2	Coordinate_waveband2	Coordinate_Source2	Name3	AGN_type3	z3	z3_type	RA3	Dec3	Equinox3	Coordinate_waveband3	Coordinate_Source3	Name4	z4	z4_type	AGN_type4	RA4	Dec4	Equinox4	Coordinate_waveband4	Coordinate_Source4	Sep12	Sep13	Sep14	Sep23	Sep24	Sep34	Sep(kpc)12_z1	Sep(kpc)12_z2	Sep(kpc)13_z1	Sep(kpc)13_z3	Sep(kpc)23_z2	Sep(kpc)23_z3	Sep(kpc)14_z1	Sep(kpc)14_z4	Sep(kpc)24_z2	Sep(kpc)24_z3	Sep(kpc)34_z3	Sep(kpc)34_z4	dV_12	dV_13	dV_14	dV_23	dV_24	dV_34	Paper(s)	BibCode(s)	DOI(s)
Quadruple AGN Candidate	0.5	Triple AGN Candidate	0.5	Dual AGN Candidate	0.5		Optical Spectroscopy / Fiber Spectroscopy / Spectroscopic Emission Line Ratios	-99	J135632.71+232118.3	0.0661	spec	1.0	13:56:32.71	+23:21:18.3	J2000	Optical	SDSS	J135635.73+232136.0	0.0668	spec	2.0	13:56:35.73	+23:21:36.0	J2000	Optical	SDSS	J135638.42+232151.5	2.0	0.0659	spec	13:56:38.42	+23:21:51.5	J2000	Optical	SDSS	J135639.45+232210.3	0.0657	spec	2.0	13:56:39.45	+23:22:10.3	J2000	Optical	SDSS	45.19755398149188	85.35134958014184	106.3858714782244	40.1541780972882	61.64756012451899	23.549803008743623	57.30886581569837	57.86827460380997	108.22242819335104	107.92027752291528	51.41103444614917	50.77189833881836	134.89344214796046	134.14003297567794	78.92988942280802	77.73030039675606	29.77693134104715	29.693523287161145	-196.2585938922113	56.09756048192513	112.20564385891662	252.3561232967758	308.46416177000253	56.10808732739779	Liu+2011b	2011ApJ...737..101L	https://doi.org/10.1088/0004-637X/737/2/101
Quadruple AGN Candidate	0.5	Triple AGN Candidate	0.5	Dual AGN Candidate	0.5		Optical Spectroscopy / Fiber Spectroscopy / Spectroscopic Emission Line Ratios	-99	J144702.08+134006.2	0.0304	spec	1.0	14:47:02.08	+13:40:06.2	J2000	Optical	SDSS	J144705.78+133953.1	0.0307	spec	2.0	14:47:05.78	+13:39:53.1	J2000	Optical	SDSS	J144708.49+133917.0	2.0	0.0285	spec	14:47:08.49	+13:39:17.0	J2000	Optical	SDSS	J144712.81+133939.3	0.0323	spec	0.0	14:47:12.81	+13:39:39.3	J2000	Optical	SDSS	55.496917281877415	105.59237657506942	158.6908709195794	53.51147514596551	103.39114101448926	66.79982590400705	33.7624805451191	34.08339313859101	64.23889351765573	60.3615037231174	32.86403523212389	30.589643031250027	96.54225323718838	102.34270796681264	63.49759732321348	66.67887881568042	38.18588112884952	43.08045595258139	-87.04089864596939	551.8476042598415	-550.8309671655288	638.8881596443942	-463.79031724546167	-1102.6748221909888	Liu+2011b	2011ApJ...737..101L	https://doi.org/10.1088/0004-637X/737/2/101
Quadruple AGN Candidate	1.0	-99	-99.0	-99	-99.0	Jackpot Nebula	Serendipitous / Ly-alpha Imaging	Optical Spectroscopy	J084158.47+392121.0 (f/g QSO)	2.0412	spec		08:41:58.47	+39:21:21.0	J2000	Optical	SDSS	J084158.24+392129.1 (AGN1)	2.055	spec		08:41:58.24	+39:21:29.1	J2000	Ly-alpha at redshift	KECK/LRIS	J084158.66+392114.7 (AGN2)		2.058	spec	08:41:58.66	+39:21:14.7	J2000	Ly-alpha at redshift	Keck/LRIS	J084159.10+392104.6 (AGN3)	2.05	spec		08:41:59.10	+39:21:04.6	J2000	Ly-alpha at redshift	Keck/LRIS	8.527951510556026	6.674304980777198	17.95424896164524	15.20162552991617	26.45270057402292	11.316170224879071	71.22052248905115	71.16256950399536	55.73993794334272	55.68460499018663	126.85188606048216	126.82916277876576	149.9435110957269	149.86598252114285	220.7379041540244	220.8034415882506	94.4122977282236	94.45724924227623	-1353.688808099488	-1647.1543445144162	-863.9330536600245	-293.47285586910203	489.7621612485171	783.2337578959515	Hennawi+2015	2015Sci...348..779H	https://doi.org/2015Sci...348..779H