| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 13/09/2011 | 1 | 30 | HSX | N21E72 | |
| 14/09/2011 | 2 | 30 | CSO | N21E58 | |
| 15/09/2011 | 4 | 50 | CSO | N20E51 | |
| 16/09/2011 | 16 | 130 | DAI | N22E30 | |
| 17/09/2011 | 23 | 240 | DAI | N22E17 | |
| 18/09/2011 | 17 | 210 | DAI | N22E04 | |
| 19/09/2011 | 26 | 300 | DHC | N22W12 | |
| 20/09/2011 | 24 | 300 | DHC | N22W23 | |
| 21/09/2011 | 18 | 310 | DHC | N23W35 | |
| 22/09/2011 | 26 | 380 | EHC | N22W47 | |
| 23/09/2011 | 19 | 350 | EKC | N22W62 | |
| 24/09/2011 | 14 | 550 | EKC | N24W74 | |
| 25/09/2011 | 7 | 500 | EKC | N26W84 | |
| 26/09/2011 | 1 | 180 | HSX | N25W98 |
| C | M |
|---|---|
| 25 | 5 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | M2.5 | 24/09/2011 | 16:36 | 16:59 | 17:15 | |
| 2 | M2.37 | 23/09/2011 | 21:54 | 22:15 | 22:34 | |
| 3 | M2.3 | 23/09/2011 | 01:47 | 01:59 | 02:10 | |
| 4 | M1.43 | 12/09/2011 | 20:30 | 20:54 | 21:51 | |
| 5 | M1.39 | 23/09/2011 | 21:29 | 21:43 | 21:48 | |
| 6 | C9.91 | 23/09/2011 | 08:40 | 08:50 | 09:20 | |
| 7 | C9.57 | 22/09/2011 | 04:20 | 04:28 | 04:41 | |
| 8 | C8.54 | 24/09/2011 | 07:01 | 07:04 | 07:08 | |
| 9 | C7.98 | 22/09/2011 | 22:21 | 22:30 | 22:36 | |
| 10 | C6.58 | 16/09/2011 | 02:40 | 02:57 | 03:08 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 21/01/2026 | Kp7+ (G3) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| décembre 2025 | 124 +32.2 |
| janvier 2026 | 110 -14 |
| 30 derniers jours | 114.8 +6.7 |