Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2015-05-19	03:16:32	2457161.63648	1	-1.466	0.004	12.89	0.02
OJ 287	2015-05-19	03:42:40	2457161.65463	4	0.645	0.003	14.83	0.01
S5 0716+714	2015-05-19	03:55:24	2457161.66347	10	1.694	0.001	13.15	0.01
OJ 248	2015-05-19	04:29:00	2457161.68681	2	2.515	0.010	17.22	0.02
OJ 287	2015-05-19	04:47:01	2457161.69932	4	0.625	0.004	14.82	0.01
OJ 287	2015-05-19	05:42:44	2457161.73801	4	0.626	0.007	14.82	0.01
3C 279	2015-05-19	06:05:06	2457161.75354	1	3.794	0.004	16.19	0.01
PKS1222+216	2015-05-19	06:34:20	2457161.77384	1	1.108	0.003	15.30	0.04
S3 1227+25	2015-05-19	06:50:48	2457161.78528	A	0.416	0.003
PKS1441+252	2015-05-19	07:12:59	2457161.80068	A	1.718	0.006
PKS1510-08	2015-05-19	07:37:48	2457161.81792	1	3.511	0.002	15.11	0.03
Mrk 501	2015-05-19	07:56:14	2457161.83072	A	1.247	0.001	13.86	0.01
PKS1502+106	2015-05-19	09:12:05	2457161.88339	A	2.389	0.010
BL Lac	2015-05-19	10:47:03	2457161.94934	B	1.272	0.002	14.21	0.01
3C 454.3	2015-05-19	11:02:35	2457161.96013	4	2.148	0.004	15.98	0.03
PKS2155-304	2015-05-19	11:19:07	2457161.97160	2	2.281	0.003	14.32	0.01