| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/08/29 | 3 | 80 | DAO | S17E51 | |
| 2001/08/30 | 10 | 110 | DAO | S19E36 | |
| 2001/08/31 | 19 | 220 | DAI | S18E24 | |
| 2001/09/01 | 14 | 190 | DAO | S18E11 | |
| 2001/09/02 | 12 | 150 | DAO | S18W03 | |
| 2001/09/03 | 7 | 100 | DAO | S18W14 | |
| 2001/09/04 | 2 | 60 | DSO | S18W31 | |
| 2001/09/05 | 1 | 30 | HSX | S18W47 | |
| 2001/09/06 | 1 | 20 | HSX | S17W61 | |
| 2001/09/07 | 1 | 30 | HRX | S18W76 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.99 | 2001/08/29 | 20:53 | 21:00 | 21:15 |
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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 | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |