| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/05/10 | 6 | 40 | CSO | S04E68 | |
| 2004/05/11 | 10 | 60 | DSO | S04E52 | |
| 2004/05/12 | 5 | 50 | DAO | S05E38 | |
| 2004/05/13 | 4 | 30 | CAO | S04E27 | |
| 2004/05/14 | 3 | 20 | CRO | S06E16 | |
| 2004/05/15 | 2 | 10 | BXO | S06E03 | |
| 2004/05/16 | 2 | 10 | BXO | S06W13 | |
| 2004/05/17 | 2 | 10 | AXX | S04W26 |
| B |
|---|
| 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B4.91 | 2004/05/09 | 16:17 | 16:37 | 16:59 | |
| 2 | B1.79 | 2004/05/12 | 03:14 | 03:27 | 03:32 |
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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 |