| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 20/03/1999 | 16 | 40 | CRO | N19W22 | |
| 21/03/1999 | 11 | 30 | DSO | N20W36 | |
| 22/03/1999 | 4 | 20 | BXO | N20W50 | |
| 23/03/1999 | 5 | 20 | BXO | N19W62 |
| C |
|---|
| 2 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C7.03 | 19/03/1999 | 23:25 | 23:30 | 23:32 | |
| 2 | C1.66 | 19/03/1999 | 21:10 | 21:12 | 21:14 |
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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 | 106.7 -17.3 |
| 30 derniers jours | 102.5 -7.3 |