Explanation of the Columns for the Table of Comparison Stars

Object	Comp Star	V	σ(V)	R	σ(R)	Reference
(1)	(2)	(3)	(4)	(5)	(6)	(7)
3C 66A	A	13.65	0.02	13.36	0.01	Smith & Balonek (1998)
AO 0235+164	4	13.04	0.01	12.68	0.03	Gonzalez-Perez, et al. (2001)
	8	15.03	0.01	14.20	0.01	Gonzalez-Perez, et al. (2001)
	2	12.72	0.01	12.14	0.01	Gonzalez-Perez, et al. (2001)
CTA 26	A	14.48	0.05	13.96	0.04	Smith & Balonek (1998)
	B	12.92	0.02	12.59	0.03	Smith & Balonek (1998)
PKS 0420-014	2	13.10	0.02	12.80	0.02	Smith & Balonek (1998)
PKS 0528+134	12	16.23	0.01	15.48	0.01	Gonzalez-Perez, et al. (2001)
	15	15.79	0.01	15.14	0.01	Gonzalez-Perez, et al. (2001)
	25	13.26	0.01	12.83	0.04	Gonzalez-Perez, et al. (2001)
S5 0716+714	10	11.46	0.01	11.12	0.01	Villata, et al. (1998)
	11	13.55	0.02	13.18	0.01	Villata, et al. (1998)
PKS 0735+178	A	13.40	0.04	13.14	0.05	Smith et al. (1985)
PKS 0736+01	1	12.41	0.04	11.68	0.04	Smith et al. (1985)
	2	15.37	0.07	14.97	0.08	Smith et al. (1985)
OJ 248	2	14.71	0.02	14.46	0.03	Raiteri, et al. (1998)
	5	15.76	0.03	15.40	0.02	Raiteri, et al. (1998)
OJ 287	4	14.19	0.01	13.71	0.01	Gonzalez-Perez, et al. (2001)
	1	13.99	0.01	13.64	0.01	Gonzalez-Perez, et al. (2001)
Mrk 421	1	14.36	0.02	14.04	0.02	Villata, et al. (1998)
	2	15.57	0.05	15.20	0.03	Villata, et al. (1998)
	3	15.77	0.03	15.24	0.03	Villata, et al. (1998)
Ton 599	13	15.36	0.04	14.97	0.04	Smith et al. (1985)
	2	13.31	0.01	12.94	0.01	Gonzalez-Perez, et al. (2001)
ON 325	B	14.96	0.04	14.59	0.04	Fiorucci & Tosti (1996)
	C1	16.50	0.14	16.21	0.11	Fiorucci & Tosti (1996)
H 1219+305	A	12.47	0.01	12.11	0.01	Smith, et al. (1991)
	B	14.01	0.01	13.61	0.01	Smith, et al. (1991)
W Com	A	12.08	0.04	11.72	0.04	Fiorucci & Tosti (1996)
	D	14.81	0.04	13.86	0.04	Fiorucci & Tosti (1996)
PKS 1222+216	1	14.19	0.04	13.84	0.03	Raiteri, et al. (1998)
3C 273	C	11.87	0.04	11.30	0.04	Smith et al. (1985)
	D	12.68	0.04	12.31	0.04	Smith et al. (1985)
3C 279	1	12.40	0.01	12.03	0.01	Gonzalez-Perez, et al. (2001)
	2	12.99	0.03	12.55	0.04	Smith & Balonek (1998)
	5	15.95	0.01	15.44	0.01	Gonzalez-Perez, et al. (2001)
H 1426+428	A	14.16	0.01	13.23	0.02	Smith, et al. (1991)
	B	14.61	0.01	14.17	0.02	Smith, et al. (1991)
PKS 1510-08	1	11.60	0.03	11.23	0.03	Smith & Balonek (1998)
	4	14.66	0.01	14.25	0.01	Gonzalez-Perez, et al. (2001)
3C 345	A	13.86	0.05	13.44	0.03	Smith et al. (1985)
	D	15.25	0.01	14.77	0.01	Gonzalez-Perez, et al. (2001); Star 4
	E	15.23	0.01	14.47	0.01	Gonzalez-Perez, et al. (2001); Star 19
B2 1633+382	A	14.26	0.01	13.84	0.01	Jorstad (2010; private communication)
Mrk 501	A	12.61	0.01	12.11	0.01	Smith, et al. (1991)
1ES 1959+650	2	12.86	0.02	12.53	0.02	Villata, et al. (1998)
PKS 2155-304	2	12.04	0.01	11.64	0.01	Smith, et al. (1991)
	3	12.97	0.01	12.46	0.01	Smith, et al. (1991)
BL Lac	B	12.94	0.01	11.96	0.02	Gonzalez-Perez, et al. (2001)
	C	14.28	0.01	13.75	0.01	Gonzalez-Perez, et al. (2001)
CTA 102	1	13.98	0.03	13.56	0.04	Raiteri, et al. (1998)
	2	14.88	0.03	14.07	0.07	Raiteri, et al. (1998)
3C 454.3	3	14.40	0.01	13.95	0.01	Gonzalez-Perez, et al. (2001)
	4	13.83	0.03	13.23	0.02	Smith & Balonek (1998)
	8	13.62	0.03	13.10	0.03	Smith & Balonek (1998)
1ES 2344+514	A	12.61	0.04	12.25	0.04	Fiorucci et al. (1998)

Explanation of the Columns for the Table of Comparison Stars