| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/04/23 | 1 | 30 | HRX | N19E62 | |
| 2015/04/24 | 2 | 30 | HAX | N20E51 | |
| 2015/04/25 | 2 | 30 | HAX | N20E37 | |
| 2015/04/26 | 5 | 20 | HAX | N20E25 | |
| 2015/04/27 | 2 | 10 | HRX | N20E12 | |
| 2015/04/28 | 3 | 10 | HRX | N20W00 | |
| 2015/04/29 | 3 | 10 | AXX | N21W12 | |
| 2015/04/30 | 3 | 10 | AXX | N21W12 |
| C | M |
|---|---|
| 2 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.16 | 2015/04/21 | 10:17 | 10:40 | 10:59 | |
| 2 | C4.3 | 2015/04/23 | 19:56 | 19:59 | 20:05 | |
| 3 | C3.99 | 2015/04/22 | 03:00 | 03:05 | 03:12 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| 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 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |