Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
BL Lac	2010-12-04	02:25:54	2455534.60132	B	2.372	0.005	15.31	0.01
BL Lac	2010-12-04	04:11:56	2455534.67495	B	2.360	0.005	15.30	0.01
3C 454.3	2010-12-04	05:39:01	2455534.73543	4	1.495	0.009	15.33	0.03
BL Lac	2010-12-04	06:06:02	2455534.75419	B	2.335	0.004	15.28	0.01