Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2014-07-21	03:48:22	2456859.65859	1	-1.208	0.005	13.15	0.02
3C 279	2014-07-21	04:18:51	2456859.67975	1	2.505	0.003	14.91	0.01
PKS1222+216	2014-07-21	04:40:09	2456859.69454	1	1.118	0.004	15.31	0.04
W Com	2014-07-21	05:02:35	2456859.71013	A	3.772	0.005	15.85	0.04
BL Lac	2014-07-21	07:52:07	2456859.82786	B	1.822	0.011	14.76	0.02
BL Lac	2014-07-21	11:42:47	2456859.98804	B	1.809	0.007	14.75	0.01