| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/12/08 | 3 | 70 | DSO | N03E64 | |
| 2001/12/09 | 5 | 80 | DSO | N04E52 | |
| 2001/12/10 | 4 | 60 | CSO | N04E36 | |
| 2001/12/11 | 2 | 40 | HSX | N04E20 | |
| 2001/12/12 | 2 | 60 | CSO | N04E08 | |
| 2001/12/13 | 5 | 80 | CSO | N04W05 | |
| 2001/12/14 | 6 | 70 | CAO | N04W18 | |
| 2001/12/15 | 1 | 60 | HSX | N03W33 | |
| 2001/12/16 | 1 | 50 | HSX | N03W49 | |
| 2001/12/17 | 1 | 60 | HSX | N02W62 | |
| 2001/12/18 | 1 | 90 | HSX | N02W75 | |
| 2001/12/19 | 1 | 30 | HSX | N01W90 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.78 | 2001/12/09 | 23:05 | 23:09 | 23:13 |
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| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.2 -4.8 |
| Last 30 days | 119.2 +0.9 |