Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2015-05-20	03:13:10	2457162.63414	1	-1.492	0.017	12.87	0.03
OJ 287	2015-05-20	03:43:14	2457162.65502	4	0.857	0.012	15.05	0.02
S5 0716+714	2015-05-20	03:59:56	2457162.66661	10	1.561	0.009	13.02	0.01
OJ 287	2015-05-20	04:18:04	2457162.67922	4	0.848	0.004	15.04	0.01
OJ 287	2015-05-20	05:12:27	2457162.71698	4	0.858	0.006	15.05	0.01
3C 279	2015-05-20	05:35:09	2457162.73274	1	3.825	0.006	16.22	0.01
3C 273	2015-05-20	05:52:09	2457162.74454	C	1.207	0.001	13.08	0.04
Ton 599	2015-05-20	06:33:24	2457162.77320	13	1.814	0.008	17.17	0.04
PKS1441+252	2015-05-20	08:18:52	2457162.84643	A	1.743	0.009
PKS1510-08	2015-05-20	08:27:17	2457162.85228	1	3.732	0.008	15.33	0.03
B2 1633+382	2015-05-20	09:03:16	2457162.87727	A	2.946	0.042	17.21	0.04
Mrk 501	2015-05-20	09:20:21	2457162.88913	A	1.207	0.024	13.82	0.03
BL Lac	2015-05-20	10:50:53	2457162.95200	B	1.502	0.007	14.44	0.01