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 \label{tbl-bgtable} Measured spatial covariance amplitudes from SDSS imaging. References: (1) - \citet{mas09}; (2) - \citet{plo10}; (3) - \citet{hor08}; (4) - \citet{gen08}; (5) - \citet{kim08}; (6) - \citet{lin11} 

Galaxy sample
\(N\)
\(\langle B_g \rangle\)
\(\sigma_{Bg}\)
Reference

-
-
[Mpc\(^{1.77}]\)
[Mpc\(^{1.77}]\)
-

Blazars
757
121
436
1,2,3

BL Lac
528
111
257


FSRQ
98
116
278


Uncertain
131
143
859


Radio galaxies
283
131
410
4

FR I
55
138
598


FR II
184
133
372


Compact
44
111
258


Radio galaxies (optical counterparts)
258
269
357
5

Complex
111
321
357


Compact
37
282
434


Resolved
110
211
323


Optical galaxies
624
125
335
6

Elliptical
540
145
329


Spiral
84
\(-2\)
348




    

Galaxy sample	\(N\)	\(\langle B_g \rangle\)	\(\sigma_{Bg}\)	Reference
-	-	[Mpc\(^{1.77}]\)	[Mpc\(^{1.77}]\)	-
Blazars	757	121	436	1,2,3
BL Lac	528	111	257
FSRQ	98	116	278
Uncertain	131	143	859
Radio galaxies	283	131	410	4
FR I	55	138	598
FR II	184	133	372
Compact	44	111	258
Radio galaxies (optical counterparts)	258	269	357	5
Complex	111	321	357
Compact	37	282	434
Resolved	110	211	323
Optical galaxies	624	125	335	6
Elliptical	540	145	329
Spiral	84	\(-2\)	348