| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 04/04/2001 | 1 | 0 | AXX | S10E43 | |
| 05/04/2001 | 1 | 0 | AXX | S09E33 | |
| 06/04/2001 | 13 | 50 | DSO | S08E27 | |
| 07/04/2001 | 13 | 180 | DAO | S08E14 | |
| 08/04/2001 | 20 | 160 | DAO | S08E01 | |
| 09/04/2001 | 21 | 140 | DAO | S09W12 | |
| 10/04/2001 | 10 | 120 | DAO | S08W27 | |
| 11/04/2001 | 13 | 90 | DAO | S08W39 | |
| 12/04/2001 | 14 | 110 | DAO | S07W53 | |
| 13/04/2001 | 8 | 120 | DAO | S06W66 | |
| 14/04/2001 | 7 | 120 | DAO | S07W81 | |
| 15/04/2001 | 4 | 90 | DAO | S05W92 |
| C | M | X |
|---|---|---|
| 3 | 2 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | X1.21 | 05/04/2001 | 08:37 | 09:22 | 09:54 | |
| 2 | M1.83 | 05/04/2001 | 07:57 | 08:34 | 08:36 | |
| 3 | M1.01 | 06/04/2001 | 17:51 | 18:15 | 18:39 | |
| 4 | C9.4 | 10/04/2001 | 14:37 | 14:51 | 15:01 | |
| 5 | C2.94 | 07/04/2001 | 09:15 | 09:35 | 09:48 | |
| 6 | C2.16 | 11/04/2001 | 02:53 | 03:00 | 03:05 |
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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 | 117.9 -6.1 |
| 30 derniers jours | 121.4 +11.9 |