| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/02/11 | 3 | 10 | CRO | N09E05 | |
| 2001/02/12 | 6 | 10 | BXO | N11W08 | |
| 2001/02/13 | 3 | 20 | CAO | N13W20 | |
| 2001/02/14 | 10 | 40 | DAO | N15W33 | |
| 2001/02/15 | 11 | 60 | DAO | N15W45 | |
| 2001/02/16 | 8 | 120 | DSO | N15W58 | |
| 2001/02/17 | 7 | 110 | DAO | N15W73 | |
| 2001/02/18 | 4 | 50 | DSO | N17W83 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.7 | 2001/02/13 | 16:29 | 16:33 | 16:35 |
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 125 +39.1 |
| Last 30 days | 98.7 +39 |