| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 23/01/1999 | 4 | 30 | CRO | N19W20 | |
| 24/01/1999 | 3 | 10 | BXO | N19W34 | |
| 25/01/1999 | 6 | 30 | BXO | N20W46 | |
| 26/01/1999 | 3 | 30 | CSO | N19W59 | |
| 27/01/1999 | 2 | 20 | BXO | N19W73 |
| C | M |
|---|---|
| 1 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | M1.19 | 26/01/1999 | 18:36 | 18:44 | 18:54 | |
| 2 | C2.49 | 22/01/1999 | 20:50 | 20:54 | 20:57 |
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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 | 111.2 -12.8 |
| 30 derniers jours | 106.5 -1.5 |