| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 08/07/1999 | 9 | 40 | BXO | S21W16 | |
| 09/07/1999 | 11 | 80 | DAO | S21W30 | |
| 10/07/1999 | 12 | 100 | DAO | S21W43 | |
| 11/07/1999 | 8 | 80 | CAO | S20W57 | |
| 12/07/1999 | 9 | 160 | DAO | S20W71 | |
| 13/07/1999 | 7 | 90 | DSO | S21W84 | |
| 14/07/1999 | 3 | 20 | BXO | S20W88 |
| C |
|---|
| 7 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.63 | 08/07/1999 | 09:23 | 09:28 | 09:36 | |
| 2 | C3.17 | 11/07/1999 | 13:14 | 13:19 | 13:25 | |
| 3 | C2.06 | 11/07/1999 | 15:47 | 15:52 | 15:57 | |
| 4 | C1.79 | 07/07/1999 | 14:46 | 14:50 | 14:53 | |
| 5 | C1.37 | 09/07/1999 | 01:30 | 01:34 | 01:49 | |
| 6 | C1.35 | 09/07/1999 | 14:54 | 14:58 | 15:02 | |
| 7 | C1.06 | 09/07/1999 | 15:25 | 15:35 | 15:39 |
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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 | 114.4 -9.6 |
| 30 derniers jours | 118.1 +9.1 |