Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
OJ 287	2010-05-20	03:47:14	2455336.65780	4	1.375	0.008	15.57	0.01
S5 0716+714	2010-05-20	04:17:44	2455336.67898	10	2.184	0.002	13.64	0.01
S4 1030+61	2010-05-20	04:42:10	2455336.69595	A	2.606	0.003
Mrk 421	2010-05-20	04:58:29	2455336.70728	1	-1.206	0.002	13.15	0.02
3C 273	2010-05-20	05:11:04	2455336.71602	C	1.018	0.001	12.89	0.04
3C 279	2010-05-20	05:52:08	2455336.74454	1	5.404	0.014	17.80	0.02
PKS1222+216	2010-05-20	06:17:30	2455336.76215	1	1.247	0.004	15.44	0.04
W Com	2010-05-20	06:37:51	2455336.77628	A	3.185	0.003	15.27	0.04
H1219+305	2010-05-20	07:03:54	2455336.79438	A	3.592	0.004	16.06	0.01
PKS1510-08	2010-05-20	07:30:54	2455336.81313	1	5.197	0.006	16.80	0.03
PKS1502+106	2010-05-20	08:13:49	2455336.84293	A	3.922	0.025
B2 1633+382	2010-05-20	08:52:36	2455336.86986	A	3.615	0.010	17.87	0.01
Mrk 501	2010-05-20	09:06:39	2455336.87962	A	1.275	0.002	13.89	0.01
1ES1959+650	2010-05-20	09:22:32	2455336.89065	2	2.632	0.004	15.49	0.02
BL Lac	2010-05-20	10:20:51	2455336.93115	B	1.492	0.002	14.43	0.01
3C 454.3	2010-05-20	10:46:47	2455336.94916	4	1.566	0.002	15.39	0.02
PKS2155-304	2010-05-20	11:03:07	2455336.96050	2	1.416	0.001	13.45	0.02