| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 19/09/2001 | 1 | 60 | HAX | N05E73 | |
| 20/09/2001 | 2 | 50 | HAX | N04E58 | |
| 21/09/2001 | 3 | 40 | CSO | N04E43 | |
| 22/09/2001 | 3 | 50 | CAO | N03E30 | |
| 23/09/2001 | 5 | 50 | CSO | N02E17 | |
| 24/09/2001 | 6 | 50 | DSO | N01E03 | |
| 25/09/2001 | 16 | 80 | DSO | N01W11 | |
| 26/09/2001 | 16 | 60 | DAO | N01W24 | |
| 27/09/2001 | 9 | 40 | DSO | N01W37 | |
| 28/09/2001 | 2 | 0 | AXX | N00W49 |
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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 | 117.9 -6.1 |
| 30 derniers jours | 121.2 +12.1 |