| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 28/11/1999 | 4 | 10 | BXO | N11E01 | |
| 29/11/1999 | 9 | 40 | CSO | N10W13 | |
| 30/11/1999 | 16 | 90 | DAO | N10W27 | |
| 01/12/1999 | 23 | 170 | DAI | N11W41 | |
| 02/12/1999 | 17 | 220 | EAI | N09W53 | |
| 03/12/1999 | 14 | 400 | EAI | N11W68 | |
| 04/12/1999 | 15 | 310 | FAI | N10W83 | |
| 05/12/1999 | 1 | 120 | HAX | N11W92 |
| C |
|---|
| 7 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.73 | 30/11/1999 | 04:07 | 04:14 | 04:21 | |
| 2 | C3.41 | 30/11/1999 | 08:27 | 08:30 | 08:34 | |
| 3 | C3.24 | 30/11/1999 | 14:15 | 14:29 | 14:40 | |
| 4 | C2.59 | 30/11/1999 | 16:02 | 16:08 | 16:13 | |
| 5 | C2.13 | 03/12/1999 | 15:28 | 15:32 | 15:34 | |
| 6 | C2.1 | 30/11/1999 | 17:36 | 17:44 | 17:53 | |
| 7 | C1.54 | 01/12/1999 | 07:51 | 07:57 | 08:02 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 20/01/2026 | Kp8 (G4) |
| 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 | 107.3 -16.8 |
| 30 derniers jours | 111.9 +4 |