Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2013-05-08	03:08:25	2456420.63084	1	-2.072	0.010	12.29	0.02
S5 0716+714	2013-05-08	03:34:25	2456420.64889	10	2.369	0.002	13.83	0.01
OJ 248	2013-05-08	04:01:14	2456420.66752	2	2.558	0.013	17.27	0.02
OJ 287	2013-05-08	04:20:00	2456420.68056	4	0.833	0.039	15.02	0.04
1ES1959+650	2013-05-08	09:49:16	2456420.90921	2	2.156	0.027	15.02	0.03
BL Lac	2013-05-08	10:27:05	2456420.93547	B	2.652	0.013	15.59	0.01