| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/05/08 | 3 | 60 | CSO | S28E70 | |
| 1999/05/09 | 5 | 140 | EAO | S28E59 | |
| 1999/05/10 | 9 | 80 | DSO | S28E46 | |
| 1999/05/11 | 10 | 100 | DSO | S27E33 | |
| 1999/05/12 | 13 | 50 | BXO | S26E19 | |
| 1999/05/13 | 12 | 40 | CRO | S27E08 | |
| 1999/05/14 | 6 | 20 | BXO | S27W05 | |
| 1999/05/15 | 5 | 10 | BXO | S25W22 | |
| 1999/05/16 | 2 | 0 | BXO | S25W33 | |
| 1999/05/17 | 1 | 0 | AXX | S31W38 | |
| 1999/05/20 | 1 | 0 | AXX | S29W76 |
| C |
|---|
| 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.37 | 1999/05/14 | 21:58 | 22:31 | 22:46 | |
| 2 | C1.87 | 1999/05/10 | 20:19 | 20:22 | 20:31 |
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| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/09 | M2.8 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 135.3 +22.7 |
| Last 30 days | 129.4 +28.1 |