Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2012-05-18	03:25:21	2456065.64260	1	-1.686	0.003	12.67	0.02
OJ 287	2012-05-18	03:42:51	2456065.65476	4	-0.005	0.004	14.18	0.01
OJ 248	2012-05-18	04:30:26	2456065.68780	2	2.419	0.019	17.13	0.03
PKS1244-255	2012-05-18	05:04:48	2456065.71167	A	2.455	0.014
3C 279	2012-05-18	05:30:35	2456065.72957	1	3.136	0.005	15.54	0.01
3C 273	2012-05-18	05:49:49	2456065.74292	C	0.889	0.004	12.76	0.04
Ton 599	2012-05-18	06:27:16	2456065.76894	13	0.817	0.010	16.18	0.04
PKS1510-08	2012-05-18	08:20:18	2456065.84743	1	4.898	0.008	16.50	0.03
PKS1222+216	2012-05-18	08:47:13	2456065.86612	1	1.531	0.007	15.72	0.04
W Com	2012-05-18	09:12:10	2456065.88345	A	3.497	0.006	15.58	0.04
PG1553+113	2012-05-18	09:32:21	2456065.89747	A	0.055	0.004
B2 1633+382	2012-05-18	10:08:59	2456065.92291	A	3.378	0.016	17.64	0.02
Mrk 501	2012-05-18	10:25:46	2456065.93456	A	1.350	0.003	13.96	0.01
BL Lac	2012-05-18	10:45:15	2456065.94809	B	1.019	0.004	13.96	0.01
3C 454.3	2012-05-18	11:07:20	2456065.96343	4	2.872	0.014	16.70	0.03
PKS2155-304	2012-05-18	11:34:05	2456065.98200	2	2.054	0.024	14.09	0.02