| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/12/17 | 2 | 240 | HAX | S11E73 | |
| 2001/12/18 | 4 | 160 | HAX | S12E59 | |
| 2001/12/19 | 6 | 150 | CAO | S10E45 | |
| 2001/12/20 | 2 | 120 | HAX | S10E34 | |
| 2001/12/21 | 5 | 120 | CAO | S11E19 | |
| 2001/12/22 | 5 | 130 | CAO | S10E04 | |
| 2001/12/23 | 6 | 130 | CSO | S09W07 | |
| 2001/12/24 | 2 | 120 | CSO | S11W20 | |
| 2001/12/25 | 2 | 90 | CAO | S10W34 | |
| 2001/12/26 | 4 | 100 | CAO | S09W46 | |
| 2001/12/27 | 2 | 70 | CSO | S09W60 | |
| 2001/12/28 | 1 | 50 | HSX | S09W74 | |
| 2001/12/29 | 1 | 60 | HSX | S10W89 |
| C |
|---|
| 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C6.71 | 2001/12/27 | 21:34 | 21:43 | 21:53 | |
| 2 | C4.68 | 2001/12/16 | 14:15 | 14:24 | 14:34 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/08 | M2.4 |
| 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 | 167.7 +75.9 |
| Last 30 days | 107.1 +12.4 |