| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 31/08/2011 | 3 | 10 | BXO | N24E01 | |
| 01/09/2011 | 9 | 50 | DSO | N25W13 | |
| 02/09/2011 | 13 | 50 | DSO | N25W26 | |
| 03/09/2011 | 12 | 170 | ESO | N25W40 | |
| 04/09/2011 | 8 | 100 | ESO | N23W52 | |
| 05/09/2011 | 6 | 90 | CSO | N24W66 | |
| 06/09/2011 | 1 | 70 | HSX | N22W86 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 22/01/2026 | Kp5+ (G1) |
| 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 | 114.4 -9.6 |
| 30 derniers jours | 118.1 +9.1 |