| Numero di macchie solari |
Dimensione | Classe Magn. | Classe Macchia | Posizione | |
|---|---|---|---|---|---|
| 1997/04/03 | 3 | 50 | CAO | S30E77 | |
| 1997/04/04 | 4 | 70 | CAO | S27E64 | |
| 1997/04/05 | 4 | 80 | CAO | S29E51 | |
| 1997/04/06 | 10 | 70 | CSO | S28E38 | |
| 1997/04/07 | 7 | 50 | CAO | S28E24 | |
| 1997/04/08 | 6 | 30 | CRO | S28E12 | |
| 1997/04/09 | 4 | 20 | CAO | S28E00 | |
| 1997/04/10 | 4 | 10 | BXO | S28W13 | |
| 1997/04/12 | 3 | 10 | BXO | S28W39 |
| B | C |
|---|---|
| 3 | 1 |
| Inizio | Massimo | Fine | ||||
|---|---|---|---|---|---|---|
| 1 | C9.01 | 1997/04/07 | 13:50 | 14:07 | 14:19 | |
| 2 | B7.37 | 1997/04/05 | 20:16 | 20:29 | 20:42 | |
| 3 | B6.23 | 1997/04/05 | 15:14 | 15:31 | 15:40 | |
| 4 | B5.49 | 1997/04/09 | 04:18 | 04:34 | 04:46 |
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| Ultimo brillamento X | 2026/04/24 | X2.5 |
| Ultimo brillamento M | 2026/05/22 | M2.3 |
| 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 | 87.5 +8.2 |
| Ultimi 30 giorni | 95.7 +3.6 |