Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 421	2011-10-24	12:25:41	2455859.01784	1	-1.660	0.003	12.70	0.02
Mrk 421	2011-10-27	12:30:57	2455862.02149	1	-1.534	0.011	12.83	0.02
Mrk 421	2011-11-26	11:49:25	2455891.99265	1	-1.481	0.003	12.88	0.02
Mrk 421	2011-11-27	12:00:48	2455893.00056	1	-1.438	0.003	12.92	0.02
Mrk 421	2011-11-28	12:00:48	2455894.00056	1	-1.483	0.003	12.88	0.02
Mrk 421	2011-11-30	10:50:16	2455895.95157	1	-1.378	0.003	12.98	0.02
Mrk 421	2011-12-01	11:51:29	2455896.99408	1	-1.363	0.003	13.00	0.02
Mrk 421	2011-12-27	10:11:26	2455922.92461	1	-1.076	0.003	13.28	0.02
Mrk 421	2011-12-28	11:23:42	2455923.97479	1	-1.046	0.003	13.31	0.02
Mrk 421	2011-12-29	09:35:53	2455924.89992	1	-1.041	0.002	13.32	0.02
Mrk 421	2011-12-30	10:24:19	2455925.93355	1	-1.050	0.003	13.31	0.02
Mrk 421	2011-12-31	10:58:33	2455926.95733	1	-1.069	0.003	13.29	0.02
Mrk 421	2012-01-01	10:29:09	2455927.93690	1	-1.080	0.009	13.28	0.02
Mrk 421	2012-01-22	10:26:24	2455948.93501	1	-1.146	0.014	13.21	0.02
Mrk 421	2012-01-23	10:30:05	2455949.93755	1	-1.183	0.002	13.18	0.02
Mrk 421	2012-01-25	09:51:24	2455951.91069	1	-1.206	0.018	13.15	0.02
Mrk 421	2012-01-26	10:01:35	2455952.91777	1	-1.125	0.030	13.24	0.03
Mrk 421	2012-01-27	10:29:33	2455953.93719	1	-1.279	0.002	13.08	0.02
Mrk 421	2012-01-29	09:24:51	2455955.89226	1	-1.258	0.002	13.10	0.02
Mrk 421	2012-01-30	09:50:00	2455956.90972	1	-1.291	0.009	13.07	0.02
Mrk 421	2012-02-13	10:25:44	2455970.93454	1	-1.455	0.002	12.91	0.02
Mrk 421	2012-02-18	07:16:40	2455975.80324	1	-1.466	0.002	12.89	0.02
Mrk 421	2012-02-19	07:42:16	2455976.82102	1	-1.452	0.002	12.91	0.02
Mrk 421	2012-02-20	09:16:26	2455977.88641	1	-1.475	0.002	12.89	0.02
Mrk 421	2012-02-21	09:08:04	2455978.88060	1	-1.486	0.008	12.87	0.02
Mrk 421	2012-03-21	07:17:55	2456007.80411	1	-1.548	0.002	12.81	0.02
Mrk 421	2012-03-22	05:48:55	2456008.74230	1	-1.440	0.002	12.92	0.02
Mrk 421	2012-03-23	07:30:26	2456009.81280	1	-1.442	0.006	12.92	0.02
Mrk 421	2012-03-24	06:54:09	2456010.78760	1	-1.436	0.002	12.92	0.02
Mrk 421	2012-03-25	07:26:04	2456011.80976	1	-1.421	0.003	12.94	0.02
Mrk 421	2012-03-27	08:00:19	2456013.83355	1	-1.414	0.002	12.95	0.02
Mrk 421	2012-03-28	07:01:50	2456014.79294	1	-1.502	0.002	12.86	0.02
Mrk 421	2012-04-22	04:54:56	2456039.70481	1	-1.645	0.003	12.71	0.02
Mrk 421	2012-04-23	05:17:53	2456040.72075	1	-1.643	0.004	12.72	0.02
Mrk 421	2012-04-25	05:11:38	2456042.71641	1	-1.622	0.056	12.74	0.06
Mrk 421	2012-04-27	06:11:54	2456044.75826	1	-1.525	0.003	12.83	0.02
Mrk 421	2012-04-28	06:04:18	2456045.75299	1	-1.510	0.003	12.85	0.02
Mrk 421	2012-04-29	04:02:13	2456046.66820	1	-1.459	0.009	12.90	0.02
Mrk 421	2012-04-30	03:26:58	2456047.64373	1	-1.516	0.004	12.84	0.02
Mrk 421	2012-05-16	03:30:15	2456063.64601	1	-1.715	0.003	12.65	0.02
Mrk 421	2012-05-17	03:32:28	2456064.64755	1	-1.694	0.003	12.67	0.02
Mrk 421	2012-05-18	03:25:21	2456065.64260	1	-1.686	0.003	12.67	0.02
Mrk 421	2012-05-22	03:31:11	2456069.64666	1	-1.678	0.003	12.68	0.02
Mrk 421	2012-05-23	03:30:38	2456070.64627	1	-1.690	0.003	12.67	0.02
Mrk 421	2012-05-24	03:44:37	2456071.65598	1	-1.632	0.003	12.73	0.02
Mrk 421	2012-05-25	03:45:55	2456072.65689	1	-1.681	0.003	12.68	0.02
Mrk 421	2012-05-26	03:28:24	2456073.64472	1	-1.781	0.004	12.58	0.02
Mrk 421	2012-05-27	03:32:26	2456074.64752	1	-1.763	0.004	12.60	0.02
Mrk 421	2012-05-28	03:47:31	2456075.65800	1	-1.806	0.003	12.55	0.02
Mrk 421	2012-06-13	05:02:01	2456091.70973	1	-1.970	0.019	12.39	0.02
Mrk 421	2012-06-14	04:34:15	2456092.69045	1	-1.952	0.003	12.41	0.02
Mrk 421	2012-06-15	03:43:10	2456093.65498	1	-1.921	0.004	12.44	0.02
Mrk 421	2012-06-16	04:23:54	2456094.68326	1	-1.921	0.003	12.44	0.02
Mrk 421	2012-06-18	04:04:59	2456096.67013	1	-1.962	0.003	12.40	0.02
Mrk 421	2012-06-19	03:49:17	2456097.65922	1	-1.984	0.004	12.38	0.02
Mrk 421	2012-06-20	03:57:12	2456098.66472	1	-1.994	0.003	12.37	0.02
Mrk 421	2012-06-21	03:45:58	2456099.65692	1	-1.915	0.004	12.44	0.02
Mrk 421	2012-07-18	03:53:16	2456126.66199	1	-1.960	0.007	12.40	0.02