| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/08/11 | 9 | 30 | CRO | S03E04 | |
| 2001/08/12 | 17 | 320 | DAI | S04W10 | |
| 2001/08/13 | 20 | 370 | DAI | S04W24 | |
| 2001/08/14 | 20 | 370 | EKI | S05W38 | |
| 2001/08/15 | 19 | 300 | EKI | S04W51 | |
| 2001/08/16 | 13 | 190 | EAO | S04W66 | |
| 2001/08/17 | 3 | 150 | EAO | S04W79 | |
| 2001/08/18 | 1 | 40 | HSX | S04W90 |
| C |
|---|
| 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.7 | 2001/08/12 | 04:38 | 04:41 | 04:44 | |
| 2 | C1.57 | 2001/08/15 | 12:38 | 12:42 | 12:44 | |
| 3 | C1.49 | 2001/08/13 | 19:18 | 19:21 | 19:25 | |
| 4 | C1.17 | 2001/08/11 | 00:28 | 00:33 | 00:36 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2026/01/11 | M3.3 |
| Last geomagnetic storm | 2026/01/11 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 96.8 -27.3 |
| Last 30 days | 99.1 -7.4 |