# Tohban Notes on 2020-09-06 - 2020-09-15 Geomagnetic activity overview 2020-09-06 - 2020-09-13 Non-storm interval (no considerable Dst activity) 2020-09-14 - 2020-09-15 Provisional Dst decrease to -59 nT between 0400 and 0600 UT. 2020-09-12/08:00 - 10:00 UT AE/AL activations with max AE > 500 nT; 2020-09-13/22:00 - 24:00 UT AE/AL activation with AE max ~ 500 nT; 2020-09-14/00:00 - 06:00 UT Periodic AE/AL activations with AE > 500 nT; 2020-09-14/11:00 - 13:00 UT Substorm with Dst max ~ 700 nT (AL min ~ -600 nT). ------------------------------------------------------------- Science notes on ELFIN data EL-A 2020-09-06/10:53 - 10:54 UT North Descending Sharp isotropization at LAT ~ 65, MLT ~ 0.5 2020-09-06/23:19 - 23:21 UT North Descending Flux increase, precipitation 2020-09-12/11:48 - 11:49 UT North Descending Sharp precipitation at LAT ~ 67 and MLT ~ 0.3 EL-B 2020-09-13/23:03 - 23:09 UT North Descending Increased flux, nearly isotropic (data is too fragmetal by now) ------------------------------------------------------------- Data collection (current status) EL-A 2020-09-06 8 SZ, North Descending 2020-09-07 7 SZ, North Descending 2020-09-08 8 SZ, North Descending 2020-09-10 4 SZ, North Descending 2020-09-11 6 SZ, North Descending 2020-09-12 6 SZ, North Descending 2020-09-13 5 SZ, North Descending 2020-09-14 5 SZ, North Descending Comments 2020-09-06/12:25 - 12:26 UT North Descending Data gaps 2020-09-07/11:49 - 11:51 UT North Descending Data gaps 2020-09-07/11:49 - 11:51 UT North Descending Data gaps 2020-09-07/12:44 - 12:46 UT North Descending Data gaps 2020-09-08/17:24 - 17:26 UT North Descending Data gaps 2020-09-08/23:39 - 23:30 UT North Descending Data gaps 2020-09-09/00:00 - 24:00 UT 24-hrs plot shows no data, SZ plots show up. 2020-09-13/06:32 - 06:34 UT North Descending Data gaps 2020-09-13/12:44 - 12:46 UT North Descending Data gaps 2020-09-14 North Descending Data are not regularized (yet) EL-B 2020-09-06 5 SZ, North Descending 2020-09-07 8 SZ, North Descending 2020-09-08 8 SZ, North Descending 2020-09-09 5 SZ, North Descending 2020-09-10 7 SZ, North Descending 2020-09-11 7 SZ, North Descending 2020-09-12 7 SZ, North Descending 2020-09-13 7 SZ, North Descending 2020-09-14 5 SZ, South Descending, North Descending Comments 2020-09-07/01:54 - 01:56 UT North Descending Data gaps 2020-09-07/11:16 - 11:18 UT North Descending Data gaps 2020-09-08/02:50 - 02:55 UT North Descending Data gaps 2020-09-08/06:00 - 06:04 UT North Descending Data gaps 2020-09-08/10:40 - 10:42 UT North Descending Data gaps 2020-09-08/12:13 - 12:16 UT North Descending Data gaps 2020-09-08/13:44 - 13:48 UT North Descending Data gaps 2020-09-09/00:40 - 00:42 UT North Descending Data gaps 2020-09-09/02:12 - 02:18 UT North Descending Data gaps 2020-09-09/11:34 - 11:38 UT North Descending Data gaps 2020-09-09/13:06 - 13:12 UT North Descending Data gaps 2020-09-09/14:40 - 14:44 UT North Descending Data gaps 2020-09-10/14:42 - 14:46 UT North Descending Data gaps 2020-09-12/00:19 - 00:24 UT North Descending Data gaps 2020-09-12/01:54 - 01:58 UT North Descending Data gaps, too fragmental 2020-09-12/11:15 - 11:20 UT North Descending Data gaps 2020-09-12/12:47 - 12:53 UT North Descending Data gaps 2020-09-12/14:20 - 14:26 UT North Descending Data gaps 2020-09-12/23:41 - 23:46 UT North Descending Data gaps, too fragmental 2020-09-13/19:56 - 20:02 UT North Descending Data gaps, too fragmental 2020-09-13/23:03 - 23:09 UT North Descending Data gaps, too fragmental 2020-09-14 South Descending Data are not regularized (yet) 2020-09-14/07:10 - 07:14 UT North Descending Measurements between L~1.2 and 1.1. Is something wrong?