Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2013-05-31	03:40:35	2456443.65318	1	-2.086	0.003	12.27	0.02
OJ 287	2013-05-31	04:14:34	2456443.67678	4	0.414	0.005	14.60	0.01
3C 273	2013-05-31	05:49:21	2456443.74260	C	0.932	0.002	12.80	0.04
3C 279	2013-05-31	06:13:07	2456443.75911	1	3.405	0.007	15.81	0.01
PKS1222+216	2013-05-31	06:39:44	2456443.77759	1	1.544	0.006	15.73	0.04
PKS1510-08	2013-05-31	07:18:11	2456443.80429	1	5.093	0.009	16.69	0.03
B2 1633+382	2013-05-31	09:09:41	2456443.88172	A	2.518	0.008	16.78	0.01
Mrk 501	2013-05-31	09:26:57	2456443.89372	A	1.310	0.003	13.92	0.01
BL Lac	2013-05-31	09:50:57	2456443.91038	B	2.467	0.006	15.41	0.01
3C 454.3	2013-05-31	10:14:40	2456443.92685	4	2.473	0.014	16.30	0.03
PKS2155-304	2013-05-31	10:31:35	2456443.93860	2	1.699	0.009	13.74	0.01
CTA102	2013-05-31	10:57:19	2456443.95647	2	1.864	0.015	16.74	0.03
PMN J2345-1555	2013-05-31	11:17:52	2456443.97074	A	-1.631	0.037