Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2015-04-20	03:20:20	2457132.63911	1	-1.424	0.007	12.94	0.02
PKS0736+01	2015-04-20	04:45:48	2457132.69847	1	4.137	0.019	16.55	0.04
PKS0805-077	2015-04-20	05:26:48	2457132.72694	A	3.095	0.063
OJ 287	2015-04-20	05:56:26	2457132.74752	4	0.865	0.007	15.06	0.01
OJ 248	2015-04-20	06:40:58	2457132.77845	2	2.468	0.021	17.18	0.03
S4 1030+61	2015-04-20	07:22:53	2457132.80756	A	4.626	0.038
3C 279	2015-04-20	07:49:16	2457132.82587	1	3.761	0.016	16.16	0.02
PKS1502+106	2015-04-20	11:36:55	2457132.98397	A	1.677	0.028
BL Lac	2015-04-20	11:55:07	2457132.99660	B	0.849	0.003	13.79	0.01