Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2008-10-04	12:02:07	2454744.00147	1	-1.182	0.002	13.18	0.02
Mrk 421	2008-10-06	12:07:24	2454746.00514	1	-1.184	0.002	13.18	0.02
Mrk 421	2008-10-07	12:03:47	2454747.00263	1	-1.178	0.002	13.18	0.02
Mrk 421	2008-10-08	12:07:17	2454748.00506	1	-1.245	0.002	13.12	0.02
Mrk 421	2008-10-09	12:01:03	2454749.00073	1	-1.287	0.002	13.07	0.02
Mrk 421	2008-10-28	12:07:02	2454768.00488	1	-1.256	0.002	13.10	0.02
Mrk 421	2008-10-29	11:46:14	2454768.99044	1	-1.244	0.002	13.12	0.02
Mrk 421	2008-10-30	11:55:02	2454769.99655	1	-1.207	0.002	13.15	0.02
Mrk 421	2008-11-01	12:32:13	2454772.02237	1	-1.167	0.002	13.19	0.02
Mrk 421	2008-11-03	11:44:16	2454773.98907	1	-1.272	0.002	13.09	0.02
Mrk 421	2008-11-04	11:54:31	2454774.99619	1	-1.311	0.002	13.05	0.02
Mrk 421	2008-11-24	11:47:28	2454794.99130	1	-0.981	0.002	13.38	0.02
Mrk 421	2008-11-30	10:53:26	2454800.95377	1	-0.940	0.002	13.42	0.02
Mrk 421	2008-12-01	10:49:04	2454801.95074	1	-0.966	0.002	13.39	0.02
Mrk 421	2008-12-02	10:52:04	2454802.95282	1	-0.946	0.002	13.41	0.02
Mrk 421	2008-12-03	10:18:31	2454803.92953	1	-0.944	0.002	13.42	0.02
Mrk 421	2008-12-05	09:54:04	2454805.91255	1	-1.010	0.003	13.35	0.02
Mrk 421	2008-12-05	10:10:35	2454805.92402	3	-2.464	0.005	13.31	0.03
Mrk 421	2008-12-05	10:10:35	2454805.92402	2	-2.215	0.004	13.36	0.05
Mrk 421	2008-12-28	09:49:29	2454828.90936	1	-0.846	0.002	13.51	0.02
Mrk 421	2008-12-28	09:58:19	2454828.91550	3	-2.150	0.003	13.62	0.03
Mrk 421	2008-12-29	09:30:19	2454829.89605	1	-0.913	0.002	13.45	0.02
Mrk 421	2008-12-30	09:25:39	2454830.89281	1	-0.908	0.002	13.45	0.02
Mrk 421	2008-12-31	09:44:39	2454831.90601	1	-0.910	0.002	13.45	0.02
Mrk 421	2009-01-01	09:57:00	2454832.91458	1	-0.913	0.002	13.45	0.02
Mrk 421	2009-01-29	08:18:16	2454860.84602	1	-0.845	0.002	13.51	0.02
Mrk 421	2009-01-30	08:13:38	2454861.84280	1	-0.901	0.002	13.46	0.02
Mrk 421	2009-01-31	08:53:07	2454862.87022	1	-0.844	0.002	13.52	0.02
Mrk 421	2009-02-01	08:04:30	2454863.83646	1	-0.827	0.002	13.53	0.02
Mrk 421	2009-02-19	06:27:40	2454881.76921	1	-0.940	0.002	13.42	0.02
Mrk 421	2009-02-20	05:57:50	2454882.74850	1	-0.953	0.002	13.41	0.02
Mrk 421	2009-02-26	08:12:28	2454888.84199	1	-1.002	0.002	13.36	0.02
Mrk 421	2009-03-21	05:45:56	2454911.74023	1	-1.193	0.002	13.17	0.02
Mrk 421	2009-03-23	05:23:51	2454913.72490	1	-1.126	0.002	13.23	0.02
Mrk 421	2009-03-24	05:18:10	2454914.72095	1	-1.121	0.002	13.24	0.02
Mrk 421	2009-03-26	05:20:36	2454916.72264	1	-1.088	0.001	13.27	0.02
Mrk 421	2009-03-26	05:23:19	2454916.72453	2	-2.300	0.003	13.27	0.05
Mrk 421	2009-03-27	06:52:34	2454917.78650	1	-1.027	0.002	13.33	0.02
Mrk 421	2009-04-26	06:18:59	2454947.76318	1	-1.190	0.002	13.17	0.02
Mrk 421	2009-04-27	04:51:46	2454948.70262	1	-1.180	0.002	13.18	0.02
Mrk 421	2009-04-29	05:09:49	2454950.71515	1	-1.099	0.002	13.26	0.02
Mrk 421	2009-04-30	05:04:59	2454951.71179	1	-1.107	0.002	13.25	0.02
Mrk 421	2009-05-01	04:14:10	2454952.67650	1	-1.071	0.002	13.29	0.02