Dataset S1 for Sandhu et al. "Challenging the Use of Ring Current Indices During Geomagnetic Storms". The storm list was derived using the algorithm of Walach & Grocott [2019, doi:10.1029/2019JA026816], where full details on the algorithm can be found. Should you have any questions, please contact the list author: Maria-Theresia Walach (m.walach@lancaster.ac.uk). The first four data columns show the beginning of each phase and the end of the recovery phase, followed by the minimum Sym-H index: Initial phase start: Main phase start: Recovery phase start: Recovery phase end: Sym-H minimum: yyyymmdd hh:mm yyyymmdd hh:mm yyyymmdd hh:mm yyyymmdd hh:mm nT 20120308 10:51 20120309 02:20 20120309 08:13 20120311 13:08 -150 20120929 18:15 20120930 23:24 20121001 03:52 20121002 00:32 -138 20120422 21:31 20120423 19:13 20120424 03:26 20120426 04:47 -125 20120712 16:01 20120715 06:44 20120715 10:04 20120718 13:33 -123 20121113 02:50 20121113 19:21 20121114 07:27 20121116 23:30 -118 20121007 04:47 20121008 05:28 20121009 02:10 20121009 19:52 -116 20121012 13:32 20121012 20:33 20121013 07:59 20121016 00:14 -106 20120306 14:46 20120307 04:47 20120307 06:52 20120308 10:45 -98 20120121 09:19 20120122 16:39 20120123 03:49 20120124 15:04 -88 20120901 16:19 20120902 04:00 20120905 07:43 20120905 23:17 -83 20120124 15:03 20120124 18:15 20120125 10:45 20120127 16:18 -82 20130529 13:11 20130601 02:04 20130601 07:48 20130603 19:38 -137 20130317 01:40 20130317 08:04 20130317 20:28 20130320 19:43 -132 20130627 01:36 20130628 12:09 20130629 06:34 20130701 14:38 -111 20130926 00:57 20131002 05:07 20131002 06:19 20131003 18:40 -90 20130606 08:21 20130606 17:52 20130607 02:41 20130607 23:13 -88 20140217 23:34 20140218 19:24 20140219 08:23 20140222 17:18 -127 20140227 16:50 20140227 19:14 20140227 23:24 20140302 14:27 -101 20140912 09:48 20140912 21:48 20140912 23:03 20140913 06:18 -97 20140410 08:59 20140411 19:51 20140412 08:30 20140414 16:16 -92 20140824 09:23 20140827 04:53 20140827 18:18 20140830 22:52 -90 20150313 14:00 20150317 07:21 20150317 22:47 20150322 02:48 -234 20150622 18:33 20150622 19:19 20150623 04:24 20150629 16:20 -208 20151217 21:09 20151220 05:33 20151220 22:49 20151223 07:30 -170 20150107 01:20 20150107 08:26 20150107 11:00 20150110 22:33 -135 20151006 07:24 20151007 03:25 20151007 22:23 20151010 09:43 -124 20150908 11:24 20150909 00:45 20150909 08:03 20150910 15:43 -113 20151106 17:59 20151106 23:30 20151107 06:05 20151110 12:06 -106 20150607 08:14 20150608 06:13 20150608 07:45 20150612 07:39 -105 20150826 04:41 20150826 13:15 20150827 20:32 20150829 22:27 -101 20151227 12:06 20151231 13:00 20151231 23:56 20160102 05:24 -99 20150512 21:24 20150513 00:48 20150513 06:59 20150514 23:21 -98 20150910 20:26 20150911 07:50 20150911 14:21 20150914 02:32 -95 20150813 22:39 20150815 11:09 20150816 07:37 20150818 13:52 -94 20150906 21:12 20150907 13:25 20150908 01:49 20150908 09:37 -91 20150410 16:38 20150410 18:08 20150411 09:36 20150412 11:51 -89 20150415 05:59 20150415 10:25 20150416 23:29 20150418 07:36 -88 20150703 01:50 20150704 21:04 20150705 04:52 20150708 07:30 -87 20150920 06:04 20150920 06:41 20150920 11:05 20150921 10:18 -84 20150719 00:05 20150723 04:09 20150723 07:28 20150726 13:04 -83 20161010 22:43 20161013 07:03 20161013 23:45 20161014 20:02 -114 20160304 02:24 20160306 16:44 20160306 21:20 20160310 14:36 -110 20160507 17:10 20160508 01:54 20160508 08:15 20160511 14:48 -105 20160119 11:46 20160120 07:21 20160120 16:42 20160122 17:31 -95 20160820 03:07 20160823 13:35 20160823 21:13 20160825 06:23 -83 20161024 18:58 20161024 19:48 20161025 22:57 20161101 18:10 -81 20170902 10:52 20170907 23:07 20170908 01:08 20170910 18:40 -146 20170524 16:24 20170527 23:09 20170528 07:13 20170529 08:01 -142 20171103 14:13 20171107 08:37 20171108 04:04 20171111 19:00 -89 20170325 17:43 20170327 04:49 20170327 14:45 20170401 03:28 -86 20180823 19:05 20180825 18:42 20180826 07:11 20180831 05:03 -206 20180418 19:02 20180420 05:07 20180420 09:35 20180422 15:09 -86