| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/08/08 | 2 | 0 | BXO | N19E16 | |
| 1998/08/10 | 9 | 30 | CSO | N18W11 | |
| 1998/08/11 | 6 | 30 | BXO | N19W24 | |
| 1998/08/12 | 15 | 60 | CAO | N20W38 | |
| 1998/08/13 | 14 | 60 | CAO | N20W51 | |
| 1998/08/14 | 7 | 10 | BXO | N18W66 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.7 | 1998/08/10 | 21:37 | 21:42 | 22:06 |
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| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/04 | M1.89 |
| Last geomagnetic storm | 2026/05/05 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 138.2 +58.9 |
| Last 30 days | 93.2 -6 |