| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/04/14 | 6 | 220 | DAO | N17E71 | |
| 2011/04/15 | 9 | 260 | DAO | N16E58 | |
| 2011/04/16 | 14 | 340 | EKO | N17E44 | |
| 2011/04/17 | 19 | 360 | EKI | N16E32 | |
| 2011/04/18 | 21 | 430 | EAI | N16E19 | |
| 2011/04/19 | 22 | 350 | ESC | N17E05 | |
| 2011/04/20 | 26 | 350 | EKI | N17W08 | |
| 2011/04/21 | 26 | 300 | EHI | N16W20 | |
| 2011/04/22 | 20 | 300 | EHI | N16W32 | |
| 2011/04/23 | 16 | 190 | ESI | N17W45 | |
| 2011/04/24 | 18 | 270 | EKI | N17W57 | |
| 2011/04/25 | 18 | 200 | CAO | N18W73 | |
| 2011/04/26 | 8 | 270 | DSO | N16W84 |
| B | C |
|---|---|
| 3 | 17 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C7.12 | 2011/04/14 | 05:20 | 05:27 | 05:33 | |
| 2 | C2.91 | 2011/04/14 | 02:49 | 02:58 | 03:23 | |
| 3 | C2.72 | 2011/04/15 | 11:29 | 11:36 | 11:48 | |
| 4 | C2.69 | 2011/04/18 | 02:35 | 02:43 | 02:47 | |
| 5 | C2.12 | 2011/04/18 | 18:55 | 19:02 | 19:08 | |
| 6 | C2.1 | 2011/04/14 | 01:31 | 01:35 | 01:38 | |
| 7 | C2.08 | 2011/04/16 | 01:54 | 02:01 | 02:07 | |
| 8 | C1.55 | 2011/04/13 | 08:29 | 08:32 | 08:36 | |
| 9 | C1.37 | 2011/04/18 | 15:56 | 16:02 | 16:06 | |
| 10 | C1.32 | 2011/04/13 | 22:52 | 22:59 | 23:15 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |