| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/12/01 | 3 | 110 | HSX | S16E32 | |
| 2025/12/02 | 4 | 120 | CAO | S17E17 | |
| 2025/12/03 | 4 | 110 | CSO | S18E03 | |
| 2025/12/04 | 4 | 100 | CSO | S16W10 | |
| 2025/12/05 | 2 | 100 | CSO | S18W24 |
| C |
|---|
| 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.0 | 2025/12/03 | 22:40 | 22:48 | 22:52 | |
| 2 | C3.9 | 2025/12/02 | 17:35 | 17:44 | 17:48 | |
| 3 | C3.6 | 2025/12/04 | 19:15 | 19:20 | 19:23 | |
| 4 | C3.5 | 2025/12/02 | 14:06 | 14:09 | 14:13 | |
| 5 | C3.3 | 2025/12/04 | 18:59 | 19:09 | 19:15 |
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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 | |
|---|---|
| October 2025 | 114.6 -15.2 |
| December 2025 | 186 +71.4 |
| Last 30 days | 106.3 +12.6 |