| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/04/21 | 4 | 80 | DAO | S27E69 | |
| 2011/04/22 | 4 | 40 | CSO | S26E63 | |
| 2011/04/23 | 6 | 50 | CRO | S25E52 | |
| 2011/04/24 | 10 | 10 | BXO | S26E40 | |
| 2011/04/25 | 7 | 20 | CSO | S25E21 | |
| 2011/04/26 | 4 | 10 | BXO | S26E11 | |
| 2011/04/27 | 1 | 5 | AXX | S28E02 | |
| 2011/04/29 | 2 | 10 | BXO | S23W32 | |
| 2011/04/30 | 2 | 10 | BXO | S30W45 |
| B | C |
|---|---|
| 1 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.54 | 2011/04/28 | 02:32 | 02:40 | 02:46 | |
| 2 | C1.4 | 2011/05/01 | 09:49 | 09:57 | 10:04 | |
| 3 | C1.12 | 2011/04/27 | 22:54 | 23:04 | 23:23 | |
| 4 | C1.12 | 2011/04/28 | 10:41 | 10:47 | 10:52 | |
| 5 | B8.88 | 2011/04/30 | 21:54 | 21:57 | 22:00 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/21 | M1.3 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 114.3 +22.5 |
| Last 30 days | 110.4 +23.9 |