Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2013-04-15	03:13:54	2456397.63465	1	-2.177	0.010	12.18	0.02
Mrk 421	2013-04-15	04:19:40	2456397.68032	1	-2.161	0.003	12.20	0.02
Mrk 421	2013-04-15	05:12:38	2456397.71710	1	-2.158	0.003	12.20	0.02
OJ 287	2013-04-15	05:55:46	2456397.74705	4	1.051	0.007	15.24	0.01
Mrk 421	2013-04-15	06:15:06	2456397.76048	1	-2.162	0.003	12.20	0.02
Mrk 421	2013-04-15	07:18:22	2456397.80442	1	-2.171	0.008	12.19	0.02
3C 273	2013-04-15	08:01:52	2456397.83463	C	0.962	0.020	12.83	0.04
Mrk 421	2013-04-15	08:20:19	2456397.84744	1	-2.082	0.037	12.28	0.04
Mrk 421	2013-04-15	09:24:20	2456397.89190	1	-2.158	0.015	12.20	0.02
Mrk 421	2013-04-15	10:18:32	2456397.92953	1	-2.159	0.030	12.20	0.03
B2 1633+382	2013-04-15	11:12:42	2456397.96715	A	2.679	0.011	16.94	0.01
Mrk 501	2013-04-15	11:31:26	2456397.98016	A	1.346	0.025	13.96	0.02
CTA102	2013-04-15	11:53:25	2456397.99543	2	1.936	0.044	16.82	0.04