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Table 1

Summary of the Swift/XRT observations.

Sequence X-ray UVOT Start time (UT) End time (UT) Exposure Sequence X-ray UVOT Start time (UT) End time (UT) Exposure
analysed analysed (s) analysed analysed (s)
00037787001 * M2 W1 W2 2008-08-18 02:52:37 2008-08-18 18:59:56 3079 00048739013 2016-08-31 09:22:09 2016-08-31 09:23:09 43
00031428001 * 2009-06-21 01:24:19 2009-06-21 03:04:54 552 00048724014 2016-09-21 03:17:39 2016-09-21 03:18:44 58
00090522001 * M2 2010-12-12 02:58:33 2010-12-12 12:30:58 9929 00048739014 2016-09-21 03:39:49 2016-09-21 03:40:47 55
00090522002 * 2011-02-13 17:49:56 2011-02-14 19:44:56 6359 00048724015 2016-09-28 09:11:41 2016-09-28 09:12:41 48
00090522003 * 2011-02-15 00:21:13 2011-02-15 21:38:58 1462 00048724016 W1 2016-10-05 11:25:51 2016-10-05 11:26:49 38
00090522004 * 2011-02-16 07:10:52 2011-02-16 18:16:56 2700 00048739016 2016-10-05 11:47:55 2016-10-05 11:48:53 40
00090522005 * 2011-04-29 01:00:08 2011-04-30 23:46:58 9982 00048724017 2016-10-12 08:02:59 2016-10-12 08:03:52 48
00040442001 * 2011-06-30 04:25:01 2011-06-30 07:52:58 2259 00048739017 2016-10-12 10:48:53 2016-10-12 10:49:51 58
00040462001 * 2011-08-19 05:28:07 2011-08-19 15:11:56 562 00048724018 2016-10-19 10:28:48 2016-10-19 10:29:51 25
00040439001 * 2011-08-20 02:19:53 2011-08-20 18:27:58 1908 00048739018 2016-10-19 11:58:03 2016-10-19 11:59:03 55
00040440001 * M2 W1 W2 2011-08-20 13:33:54 2011-08-20 23:16:56 1637 00048724019 2016-10-25 11:35:40 2016-10-25 11:36:40 53
00040440002 * M2 W1 W2 2011-08-21 21:40:40 2011-08-21 21:44:56 243 00048739019 2016-10-25 21:07:21 2016-10-25 21:09:19 108
00032075002 * 2011-08-24 00:45:07 2011-08-24 23:34:56 6253 00048724020 2016-10-26 03:24:19 2016-10-26 03:25:22 58
00032080001 * U 2011-08-24 17:02:34 2011-08-24 18:47:49 2941 00048739020 2016-10-26 04:59:44 2016-10-26 05:00:44 25
00032075003 * 2011-08-25 06:58:37 2011-08-25 23:38:57 10531 00048724021 2016-11-09 15:28:28 2016-11-09 15:29:21 38
00040462002 * 2011-08-26 18:43:23 2011-08-27 04:31:57 983 00048739021 2016-11-09 15:50:24 2016-11-09 15:51:24 48
00040462003 * 2011-08-28 02:49:10 2011-08-29 22:16:54 1113 00048724022 2016-11-16 07:00:10 2016-11-16 07:01:10 53
00040439002 * 2011-08-29 01:10:58 2011-08-29 01:21:57 639 00048739022 2016-11-16 08:36:18 2016-11-16 08:37:18 43
00040440003 * M2 W1 W2 2011-08-31 09:11:41 2011-08-31 09:25:56 835 00048724023 2016-11-23 15:57:43 2016-11-23 15:58:26 20
00040439003 * 2011-08-31 22:02:14 2011-08-31 22:10:58 501 00048739023 2016-11-23 17:27:14 2016-11-23 17:28:16 58
00032194001 * 2011-11-29 09:59:47 2011-11-29 10:15:57 948 00048724024 2016-11-30 07:31:42 2016-11-30 07:32:35 38
00034071001 * U 2015-09-24 02:21:22 2015-09-24 05:27:20 444 00048725024 2016-11-30 08:47:34 2016-11-30 08:48:29 45
00088083001 * 2017-03-12 01:58:46 2017-03-13 19:33:52 7226 00048724025 2016-12-07 07:54:38 2016-12-07 07:55:41 45
00088083002 * M2 2017-03-14 00:03:15 2017-03-14 06:35:53 7311 00048739025 2016-12-07 08:16:44 2016-12-07 08:17:44 45
00088083003 * M2 2017-03-15 01:30:52 2017-03-15 11:40:52 7304 00048724026 2016-12-14 05:46:44 2016-12-14 05:47:44 40
00048724001 W1 2016-06-08 03:50:57 2016-06-08 03:51:57 38 00048739026 2016-12-14 07:18:47 2016-12-14 07:19:49 50
00048739001 W1 2016-06-08 06:51:07 2016-06-08 06:52:08 50 00048724027 2016-12-29 08:21:11 2016-12-29 08:22:12 58
00048724002 2016-06-16 02:58:52 2016-06-16 02:59:50 45 00048739027 2016-12-29 09:57:26 2016-12-29 09:58:24 38
00048739002 2016-06-16 04:29:12 2016-06-16 04:30:12 50 00048724028 2017-01-05 14:04:49 2017-01-05 14:05:52 50
00048724003 2016-06-24 03:38:32 2016-06-24 03:39:32 48 00048725028 2017-01-05 14:06:15 2017-01-05 14:07:20 15
00048724004 2016-06-28 12:45:00 2016-06-28 12:46:03 53 00048739028 2017-01-05 15:31:55 2017-01-05 15:32:58 45
00048739004 2016-06-28 14:21:43 2016-06-28 14:22:43 53 00048724029 2017-01-11 08:32:58 2017-01-11 08:34:00 63
00048724005 2016-07-06 12:21:15 2016-07-06 12:22:10 53 00048739029 2017-01-11 08:55:05 2017-01-11 08:56:03 55
00048739005 2016-07-06 13:58:44 2016-07-06 13:59:39 55 00048724030 2017-01-18 08:09:37 2017-01-18 08:10:40 55
00048724006 2016-07-10 11:32:55 2016-07-10 11:33:53 50 00048739030 2017-01-18 14:43:56 2017-01-18 14:44:59 63
00048739006 2016-07-10 11:54:55 2016-07-10 11:56:00 60 00048724031 2017-01-25 05:39:04 2017-01-25 05:40:04 45
00048739007 2016-07-15 17:43:27 2016-07-15 17:44:25 45 00048739031 2017-01-25 10:28:48 2017-01-25 10:29:53 45
00048724007 2016-07-15 16:01:34 2016-07-15 16:02:27 43 00048724032 2017-02-01 02:03:17 2017-02-01 02:04:20 50
00048724008 M2 2016-07-29 17:06:29 2016-07-29 17:07:34 55 00048739032 W1 2017-02-01 03:35:31 2017-02-01 03:36:34 43
00048739008 2016-07-29 18:43:22 2016-07-29 18:44:22 50 00048724033 W1 2017-02-22 05:16:52 2017-02-22 05:17:50 40
00048724009 2016-08-03 03:55:41 2016-08-03 03:56:46 63 00048724034 W1 2017-03-08 02:41:19 2017-03-08 02:42:19 53
00048739009 2016-08-03 05:34:08 2016-08-03 05:35:13 45 00048724035 2017-03-14 06:59:50 2017-03-14 07:00:53 60
00048724010 2016-08-10 01:57:56 2016-08-10 01:58:56 48 00048739035 2017-03-14 08:25:03 2017-03-14 08:25:58 43
00048739010 2016-08-10 05:13:19 2016-08-10 05:14:21 53 00048724036 2017-03-22 04:23:21 2017-03-22 04:24:14 35
00048724011 W1 2016-08-17 08:55:58 2016-08-17 08:56:53 43 00048739036 2017-03-22 07:29:17 2017-03-22 07:30:20 63
00048739011 2016-08-17 10:34:53 2016-08-17 10:35:48 40 00048739033 2017-02-22 05:38:49 2017-02-22 05:39:54 45
00048724012 W1 2016-08-24 10:03:49 2016-08-24 10:04:47 45 00048724037 2017-03-29 17:57:20 2017-03-29 17:58:25 5
00048739012 W1 2016-08-24 11:33:56 2016-08-24 11:34:57 48 00048739037 2017-03-30 00:06:23 2017-03-30 00:07:19 35
00048724013 W1 2016-08-31 07:55:06 2016-08-31 07:55:56 30

Notes. XRT was set in PC mode in all the observations listed below. Observations for which it was possible to extract meaningful X-ray spectra and fluxes are indicated with a *. Observations with the source within the UVOT field of view are indicated with the name of the filter used in the observation.

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