| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1997/04/13 | 5 | 20 | BXO | S30W37 | |
| 1997/04/14 | 9 | 60 | DSO | S30W50 | |
| 1997/04/15 | 12 | 100 | DAO | S29W63 | |
| 1997/04/16 | 6 | 170 | EAO | S30W78 |
| B | C |
|---|---|
| 1 | 1 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C1.18 | 1997/04/13 | 18:33 | 18:46 | 18:57 | |
| 2 | B6.86 | 1997/04/15 | 17:26 | 17:36 | 17:40 |
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| Ultimo brillamento X | 2026/04/24 | X2.5 |
| Ultimo brillamento M | 2026/05/29 | M1.1 |
| Ultima tempesta geomagnetica | 2026/05/16 | Kp6- (G2) |
| Giorni senza macchie | |
|---|---|
| Ultimi 365 giorni | 3 giorni |
| 2026 | 3 giorni (2%) |
| Ultimo giorno senza macchie | 2026/02/24 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| aprile 2026 | 79.3 -6.6 |
| maggio 2026 | 97.9 +18.6 |
| Ultimi 30 giorni | 97.9 +5 |