| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/04/27 | 8 | 20 | CAI | N21W23 | |
| 2011/04/28 | 12 | 120 | DAI | N21W34 | |
| 2011/04/29 | 10 | 170 | DHI | N18W48 | |
| 2011/04/30 | 8 | 180 | ESI | N18W62 | |
| 2011/05/01 | 7 | 200 | DHI | N20W74 | |
| 2011/05/02 | 5 | 210 | DSO | N18W86 |
| B | C |
|---|---|
| 1 | 10 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C9.36 | 2011/05/01 | 23:25 | 23:32 | 23:39 | |
| 2 | C3.53 | 2011/04/28 | 11:51 | 11:58 | 12:03 | |
| 3 | C2.46 | 2011/04/30 | 08:55 | 09:04 | 09:08 | |
| 4 | C2.22 | 2011/04/30 | 08:11 | 08:19 | 08:28 | |
| 5 | C1.69 | 2011/05/02 | 14:01 | 14:05 | 14:07 | |
| 6 | C1.25 | 2011/04/29 | 01:26 | 01:29 | 01:31 | |
| 7 | C1.23 | 2011/04/27 | 06:13 | 06:17 | 06:27 | |
| 8 | C1.17 | 2011/04/28 | 10:02 | 10:19 | 10:28 | |
| 9 | C1.15 | 2011/04/28 | 21:06 | 21:12 | 21:18 | |
| 10 | C1.07 | 2011/04/30 | 04:14 | 04:20 | 04:24 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/09 | M1.1 |
| 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 | 160.6 +68.8 |
| Last 30 days | 108.7 +12.8 |