Open Access
Table 1
GLEs used in the present study. All times are universal time.
| Date (number) |
Neutron monitor (cadence) |
Start time (threshold) |
Start time (extrapolated) |
Peak time (5 min) |
|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) |
| 2012 May 17 (71) | OULU (1 min) | 01:59 | 01:43 ± 6 min | 02:09 |
| 2006 Dec 13 (70) | OULU (1 min) | 02:51 | 02:50 ± 21 s | 03:05 |
| 2005 Jan 20 (69) | TERA (1 min) | 06:49 | 06:48 ± 1 s | 06:55 |
| 2003 Nov 02 (67) | MCMU (1 min) | 17:32 | 17:26 ± 2 min | 17:47 |
| 2001 Apr 15 (60) | NAIN (1 min) | 13:57 | 13:56 ± 24 s | 14:32 |
| 2000 Jul 14 (59) | THUL (5 min) | 10:32 | – | 10:40 |
| 1997 Nov 06 (55) | OULU (5 min) | 12:32 | 12:10 ± 6 min | 13:15 |
| 1991 Jun 15 (52) | TERA (5 min) | 08:42 | 08:41 ± 52 s | 09:20 |
| 1990 May 24 (48) | HBRT (1 min) | 21:04 | 21:02 ± 31 s | 21:11 |
| 1990 May 21 (47) | THUL (2 min) | 22:33 | 22:26 ± 2 min | 22:44 |
| 1989 Nov 15 (46) | TERA (1 min) | 07:05 | 06:57 ± 8 min | 07:11 |
| 1989 Oct 24 (45) | TERA (5 min) | 18:27 | 18:22 ± 53 s | 20:15 |
| 1989 Oct 22 (44) | MCMU (2 min) | 17:55 | 17:55 ± 6 s | 18:06 |
| 1989 Oct 19 (43) | TERA (5 min) | 13:17 | 13:13 ± 88 s | 16:20 |
| 1989 Sep 29 (42) | INVK (5 min) | 11:42 | 11:42 ± 11 s | 13:25 |
| 1989 Aug 16 (41) | CAPS (5 min) | 01:32 | 01:10 ± 4 min | 03:35 |
| 1984 Feb 16 (39) | SOPO (2 min) | 09:01 | 09:02 ± 2 s | 09:12 |
| 1982 Dec 07 (38) | KERG (5 min) | 23:52 | – | 24:00 |
| 1978 May 07 (31) | KERG (5 min) | 03:32 | – | 03:40 |
| 1977 Nov 22 (30) | GSBY (5 min) | 10:12 | 10:07 ± 39 s | 10:35 |
| 1976 Apr 30 (27) | INVK (5 min) | 21:22 | – | 21:35 |
| 1971 Sep 01 (23) | TXBY (5 min) | 20:07 | 19:48 ± 6 min | 22:15 |
| 1971 Jan 24 (22) | MCMU (2 min) | 23:35 | 23:33 ± 37 s | 23:50 |
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