| Nombre de taches solaires |
Zone | Classe Magn. | Classe Tache | Position | |
|---|---|---|---|---|---|
| 26/06/1998 | 2 | 10 | AXX | S26E68 | |
| 27/06/1998 | 4 | 60 | CSO | S25E58 | |
| 28/06/1998 | 3 | 70 | ESO | S25E46 | |
| 29/06/1998 | 5 | 50 | CSO | S24E33 | |
| 30/06/1998 | 7 | 40 | CAO | S24E20 | |
| 01/07/1998 | 3 | 10 | BXO | S24E04 | |
| 02/07/1998 | 2 | 0 | AXX | S23W08 | |
| 03/07/1998 | 3 | 10 | BXO | S24W19 | |
| 04/07/1998 | 15 | 20 | BXO | S24W33 | |
| 05/07/1998 | 18 | 70 | DRO | S23W47 | |
| 06/07/1998 | 11 | 30 | CRO | S24W60 | |
| 07/07/1998 | 4 | 10 | BXO | S25W74 |
| B | C | M |
|---|---|---|
| 1 | 11 | 1 |
| Départ | Maximum | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | M1.29 | 04/07/1998 | 16:32 | 16:43 | 16:53 | |
| 2 | C7.69 | 04/07/1998 | 10:00 | 10:10 | 10:23 | |
| 3 | C7.33 | 04/07/1998 | 14:40 | 14:53 | 15:10 | |
| 4 | C4.8 | 01/07/1998 | 18:01 | 18:14 | 18:26 | |
| 5 | C3.1 | 04/07/1998 | 18:38 | 18:52 | 19:00 | |
| 6 | C2.79 | 03/07/1998 | 20:04 | 20:14 | 20:21 | |
| 7 | C2.34 | 04/07/1998 | 19:20 | 19:25 | 19:35 | |
| 8 | C2.1 | 05/07/1998 | 18:00 | 18:24 | 18:39 | |
| 9 | C2.06 | 03/07/1998 | 17:25 | 17:44 | 17:58 | |
| 10 | C1.77 | 03/07/1998 | 11:19 | 11:25 | 11:33 |
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| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 21/01/2026 | Kp7+ (G3) |
| 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 | 110 -14 |
| 30 derniers jours | 114.8 +6.7 |