| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/09/25 | 3 | 140 | DAO | S14E71 | |
| 2001/09/26 | 5 | 180 | DAO | S15E59 | |
| 2001/09/27 | 7 | 210 | DSO | S15E46 | |
| 2001/09/28 | 10 | 200 | DAO | S14E32 | |
| 2001/09/29 | 9 | 220 | DSO | S15E18 | |
| 2001/09/30 | 12 | 170 | DSO | S13E06 | |
| 2001/10/01 | 19 | 190 | DAO | S13W07 | |
| 2001/10/02 | 15 | 120 | ESO | S20W19 | |
| 2001/10/03 | 9 | 90 | DAO | S14W35 | |
| 2001/10/04 | 4 | 80 | DAO | S15W49 | |
| 2001/10/05 | 5 | 60 | CAO | S14W62 | |
| 2001/10/06 | 1 | 40 | HSX | S12W77 | |
| 2001/10/07 | 1 | 30 | HSX | S13W89 |
| C | M |
|---|---|
| 1 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.53 | 2001/09/28 | 19:18 | 19:26 | 20:05 | |
| 2 | M1.08 | 2001/09/28 | 02:01 | 02:07 | 02:15 | |
| 3 | C4.83 | 2001/09/30 | 09:40 | 09:42 | 09:45 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| 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 +13.7 |