Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2012-05-23	03:30:38	2456070.64627	1	-1.690	0.003	12.67	0.02
OJ 287	2012-05-23	04:45:22	2456070.69817	4	0.003	0.032	14.19	0.03
3C 279	2012-05-23	06:43:38	2456070.78030	1	3.238	0.021	15.64	0.02
Ton 599	2012-05-23	07:12:52	2456070.80060	13	-0.391	0.009	14.97	0.04
PKS1222+216	2012-05-23	07:48:30	2456070.82535	1	1.424	0.007	15.61	0.04
PKS1510-08	2012-05-23	08:57:47	2456070.87345	1	4.901	0.013	16.50	0.03
B2 1633+382	2012-05-23	09:41:54	2456070.90410	A	3.407	0.017	17.67	0.02
Mrk 501	2012-05-23	09:58:28	2456070.91560	A	1.357	0.003	13.97	0.01
BL Lac	2012-05-23	10:18:03	2456070.92920	B	1.027	0.005	13.97	0.01
3C 454.3	2012-05-23	10:42:07	2456070.94591	4	2.841	0.010	16.67	0.03
PKS2155-304	2012-05-23	11:12:55	2456070.96730	2	2.143	0.008	14.18	0.01