| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/04/19 | 6 | 30 | CRO | N08E20 | |
| 2001/04/20 | 9 | 50 | DAO | N07E06 | |
| 2001/04/21 | 11 | 50 | DAO | N08W06 | |
| 2001/04/22 | 13 | 100 | DAO | N08W16 | |
| 2001/04/23 | 12 | 90 | DAO | N08W34 | |
| 2001/04/24 | 6 | 70 | CSO | N08W47 | |
| 2001/04/25 | 3 | 60 | CAO | N09W62 | |
| 2001/04/26 | 3 | 50 | CSO | N08W75 | |
| 2001/04/27 | 1 | 30 | HRX | N08W86 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.19 | 2001/04/20 | 08:46 | 08:50 | 08:53 |
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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 |