| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/04/17 | 9 | 40 | CAI | S05E49 | |
| 2025/04/18 | 7 | 30 | CAO | S03E33 | |
| 2025/04/19 | 5 | 20 | CRO | S04E21 | |
| 2025/04/20 | 4 | 20 | CSO | S04E08 | |
| 2025/04/21 | 4 | 10 | AXX | S04W07 | |
| 2025/04/23 | 1 | 10 | AXX | S08W33 | |
| 2025/04/24 | 1 | 10 | AXX | S05W44 |
| C |
|---|
| 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.6 | 2025/04/18 | 12:03 | 12:12 | 12:19 | |
| 2 | C1.5 | 2025/04/17 | 21:44 | 21:53 | 22:00 |
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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 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |