| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 23/02/1999 | 4 | 10 | BXO | S23E72 | |
| 24/02/1999 | 3 | 90 | DAO | S24E59 | |
| 25/02/1999 | 5 | 60 | DSO | S24E45 | |
| 26/02/1999 | 9 | 40 | CAO | S23E32 | |
| 27/02/1999 | 4 | 40 | CSO | S24E19 | |
| 28/02/1999 | 1 | 30 | HSX | S23E04 | |
| 01/03/1999 | 1 | 10 | HSX | S23W10 |
| B |
|---|
| 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | B5.21 | 26/02/1999 | 07:46 | 07:50 | 07:56 |
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| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 31/12/2025 | M7.11 |
| Dernier orage géomagnétique | 02/01/2026 | 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 | 113.6 -10.4 |
| 30 derniers jours | 106.8 -1.2 |