| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/05/07 | 3 | 30 | CAO | S24E51 | |
| 1999/05/08 | 5 | 30 | CSO | S24E38 | |
| 1999/05/09 | 15 | 70 | DSO | S24E25 | |
| 1999/05/10 | 19 | 80 | DSI | S24E12 | |
| 1999/05/11 | 18 | 100 | DAI | S24E00 | |
| 1999/05/12 | 19 | 90 | DAO | S24W14 | |
| 1999/05/13 | 9 | 30 | BXO | S24W27 | |
| 1999/05/14 | 2 | 10 | BXO | S23W41 |
| B |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B8.79 | 1999/05/15 | 17:38 | 17:41 | 17:45 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/03/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 78.5 +0.3 |
| Last 30 days | 54.2 -74.7 |