| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/04/21 | 6 | 70 | DAO | S06W60 | |
| 2004/04/22 | 4 | 50 | DSO | S06W72 | |
| 2004/04/23 | 3 | 50 | CSO | S07W84 | |
| 2004/04/24 | 4 | 90 | DSO | S08W91 |
| B | C | M |
|---|---|---|
| 3 | 30 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.27 | 2004/04/23 | 11:41 | 11:50 | 11:52 | |
| 2 | M1.67 | 2004/04/23 | 21:02 | 21:12 | 21:14 | |
| 3 | C8.82 | 2004/04/23 | 07:43 | 07:56 | 08:01 | |
| 4 | C7.33 | 2004/04/23 | 11:59 | 12:03 | 12:05 | |
| 5 | C6.89 | 2004/04/23 | 17:21 | 17:31 | 17:34 | |
| 6 | C6.31 | 2004/04/23 | 09:25 | 09:30 | 09:32 | |
| 7 | C5.73 | 2004/04/23 | 10:39 | 10:44 | 10:47 | |
| 8 | C5.59 | 2004/04/23 | 15:58 | 16:05 | 16:11 | |
| 9 | C4.3 | 2004/04/23 | 09:44 | 09:47 | 09:52 | |
| 10 | C4.22 | 2004/04/23 | 23:29 | 23:37 | 23:41 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/03/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 74.8 -3.4 |
| Last 30 days | 53.3 -74.6 |