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Table A.1
List of events where the maximum global polar cap absorption was >2 dB at 30 MHz. Event onset and end are indicated in YYYY–MM–DD HH:MM format. Data were evaluated at 5-min increments. Grey shading indicates events observed during solar maximum years, similar to Figure 2a.
| Event onset | Event end | Event onset | Event end |
|---|---|---|---|
| 1989-03-12 19:10 | 1989-03-13 11:25 | 2002-04-21 04:55 | 2002-04-21 13:00 |
| 1989-03-18 03:15 | 1989-03-18 04:10 | 2002-04-21 20:35 | 2002-04-22 12:30 |
| 1989-03-18 07:30 | 1989-03-19 11:45 | 2002-04-22 16:40 | 2002-04-22 17:55 |
| 1989-04-11 22:50 | 1989-04-12 06:10 | 2002-04-23 04:50 | 2002-04-23 05:30 |
| 1989-04-13 02:10 | 1989-04-13 08:10 | 2002-05-23 04:20 | 2002-05-23 05:05 |
| 1989-08-12 19:10 | 1989-08-15 01:35 | 2002-05-23 08:50 | 2002-05-23 11:55 |
| 1989-08-15 07:55 | 1989-08-18 09:50 | 2002-05-23 15:50 | 2002-05-23 17:15 |
| 1989-08-20 00:25 | 1989-08-20 10:50 | 2002-07-17 11:10 | 2002-07-17 20:00 |
| 1989-09-29 13:40 | 1989-10-01 15:20 | 2002-08-24 08:20 | 2002-08-24 09:00 |
| 1989-10-19 15:35 | 1989-10-27 00:20 | 2002-09-07 16:40 | 2002-09-07 18:35 |
| 1989-11-30 16:00 | 1989-11-30 23:25 | 2002-11-10 05:25 | 2002-11-10 06:35 |
| 1989-12-01 02:55 | 1989-12-02 00:50 | 2003-05-29 14:30 | 2003-05-29 19:15 |
| 1990-03-19 09:55 | 1990-03-20 23:00 | 2003-10-26 19:45 | 2003-10-27 06:25 |
| 1990-05-22 05:20 | 1990-05-22 08:05 | 2003-10-28 12:55 | 2003-10-31 03:15 |
| 1990-06-12 17:00 | 1990-06-12 20:30 | 2003-11-02 19:25 | 2003-11-04 11:55 |
| 1990-08-01 13:55 | 1990-08-02 05:25 | 2003-11-05 07:40 | 2003-11-05 08:40 |
| 1991-01-31 14:00 | 1991-01-31 22:20 | 2004-07-26 18:15 | 2004-07-27 03:05 |
| 1991-03-23 10:30 | 1991-03-26 08:30 | 2004-09-13 22:00 | 2004-09-14 15:45 |
| 1991-03-26 11:45 | 1991-03-26 12:25 | 2004-11-07 20:40 | 2004-11-08 11:55 |
| 1991-05-13 05:55 | 1991-05-13 15:45 | 2004-11-08 18:50 | 2004-11-08 21:00 |
| 1991-06-04 14:40 | 1991-06-04 16:05 | 2004-11-10 07:10 | 2004-11-10 11:00 |
| 1991-06-06 22:10 | 1991-06-07 14:25 | 2004-11-10 16:25 | 2004-11-10 21:30 |
| 1991-06-07 17:50 | 1991-06-09 02:55 | 2005-01-16 14:35 | 2005-01-17 00:15 |
| 1991-06-09 16:10 | 1991-06-09 16:25 | 2005-01-17 09:25 | 2005-01-18 23:00 |
| 1991-06-10 17:00 | 1991-06-10 17:40 | 2005-01-20 07:00 | 2005-01-20 22:20 |
| 1991-06-11 04:50 | 1991-06-13 10:15 | 2005-01-21 12:55 | 2005-01-21 18:30 |
| 1991-06-15 10:55 | 1991-06-16 17:50 | 2005-05-14 12:35 | 2005-05-15 06:15 |
| 1991-06-16 22:20 | 1991-06-17 04:20 | 2005-08-23 00:25 | 2005-08-24 10:45 |
| 1991-06-17 08:05 | 1991-06-17 11:20 | 2005-09-09 03:00 | 2005-09-12 09:20 |
| 1991-07-08 03:00 | 1991-07-09 06:20 | 2005-09-14 06:25 | 2005-09-14 20:10 |
| 1991-08-27 16:30 | 1991-08-28 04:45 | 2005-09-14 23:45 | 2005-09-15 03:50 |
| 1992-05-09 17:20 | 1992-05-10 10:25 | 2005-09-15 07:10 | 2005-09-15 14:45 |
| 1992-10-30 20:40 | 1992-11-01 23:15 | 2006-12-07 12:00 | 2006-12-08 20:20 |
| 1992-11-02 05:00 | 1992-11-03 05:25 | 2006-12-09 15:05 | 2006-12-09 15:40 |
| 1994-02-21 02:50 | 1994-02-21 12:35 | 2006-12-13 15:00 | 2006-12-13 17:00 |
| 1997-11-06 19:20 | 1997-11-07 16:05 | 2006-12-14 12:05 | 2006-12-14 17:40 |
| 1998-04-20 19:50 | 1998-04-22 22:40 | 2011-08-05 17:50 | 2011-08-05 22:45 |
| 1998-08-26 02:45 | 1998-08-26 19:45 | 2012-01-23 08:20 | 2012-01-25 07:20 |
| 1998-09-25 01:25 | 1998-09-25 01:55 | 2012-01-25 13:25 | 2012-01-25 17:50 |
| 1998-09-30 19:15 | 1998-10-01 17:00 | 2012-01-27 23:55 | 2012-01-28 05:45 |
| 1998-11-14 12:15 | 1998-11-14 15:25 | 2012-01-28 10:10 | 2012-01-28 22:50 |
| 2000-06-08 09:10 | 2000-06-08 15:10 | 2012-03-07 11:20 | 2012-03-10 05:40 |
| 2000-07-14 11:25 | 2000-07-16 07:35 | 2012-03-13 19:15 | 2012-03-14 06:25 |
| 2000-07-16 11:25 | 2000-07-16 13:10 | 2012-07-14 18:10 | 2012-07-14 22:10 |
| 2000-09-12 22:10 | 2000-09-13 06:00 | 2012-07-18 05:30 | 2012-07-18 06:05 |
| 2000-11-09 00:20 | 2000-11-10 19:40 | 2013-05-22 20:35 | 2013-05-23 19:35 |
| 2000-11-26 13:40 | 2000-11-26 23:25 | 2013-05-23 23:30 | 2013-05-24 00:20 |
| 2001-04-04 18:30 | 2001-04-04 19:05 | 2013-09-30 19:35 | 2013-10-02 02:35 |
| 2001-04-11 13:45 | 2001-04-12 03:35 | 2014-01-08 12:05 | 2014-01-09 07:05 |
| 2001-04-15 15:35 | 2001-04-15 16:10 | 2014-01-09 11:45 | 2014-01-09 20:30 |
| 2001-04-15 22:40 | 2001-04-16 02:55 | 2014-04-20 10:55 | 2014-04-20 11:10 |
| 2001-04-18 07:15 | 2001-04-18 11:25 | 2014-09-12 15:15 | 2014-09-12 17:30 |
| 2001-09-24 15:25 | 2001-09-28 17:10 | 2015-06-22 01:05 | 2015-06-23 02:10 |
| 2001-10-01 20:40 | 2001-10-02 22:20 | 2015-06-23 09:40 | 2015-06-23 10:15 |
| 2001-10-03 08:25 | 2001-10-03 09:15 | 2017-09-06 23:50 | 2017-09-07 12:50 |
| 2001-11-04 19:35 | 2001-11-05 00:35 | 2017-09-07 21:30 | 2017-09-08 05:50 |
| 2001-11-05 04:35 | 2001-11-07 01:15 | 2017-09-10 21:25 | 2017-09-12 12:50 |
| 2001-11-23 08:25 | 2001-11-24 20:15 |
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