Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2017-05-20	03:13:14	2457893.63419	1	-0.818	0.006	13.54	0.02
OJ 287	2017-05-20	03:33:19	2457893.64814	4	0.359	0.007	14.55	0.01
OJ 248	2017-05-20	04:32:22	2457893.68914	2	2.363	0.048	17.07	0.05
S4 1030+61	2017-05-20	05:15:05	2457893.71881	A	3.806	0.017
3C 279	2017-05-20	05:39:53	2457893.73603	1	2.738	0.007	15.14	0.01
3C 273	2017-05-20	05:57:37	2457893.74834	C	1.166	0.013	13.04	0.04
Ton 599	2017-05-20	06:38:33	2457893.77677	13	2.000	0.024	17.36	0.05
W Com	2017-05-20	07:04:08	2457893.79454	A	3.607	0.011	15.69	0.04
PKS1222+216	2017-05-20	07:27:00	2457893.81042	1	1.229	0.011	15.42	0.04
S3 1227+25	2017-05-20	07:52:46	2457893.82831	A	0.912	0.009
PKS1510-08	2017-05-20	08:16:40	2457893.84491	1	4.714	0.017	16.31	0.03
Mrk 501	2017-05-20	08:37:28	2457893.85935	A	1.335	0.008	13.95	0.01
B2 1633+382	2017-05-20	09:22:17	2457893.89047	A	3.048	0.018	17.31	0.02
CTA102	2017-05-20	11:12:00	2457893.96667	2	0.880	0.021	15.76	0.04
BL Lac	2017-05-20	11:26:46	2457893.97692	B	1.323	0.035	14.26	0.04