| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/02/12 | 2 | 10 | BXO | S19E77 | |
| 1998/02/13 | 3 | 10 | BXO | S19E62 | |
| 1998/02/14 | 4 | 10 | BXO | S19E50 | |
| 1998/02/15 | 4 | 20 | CSO | S20E36 | |
| 1998/02/16 | 4 | 10 | BXO | S21E23 | |
| 1998/02/17 | 5 | 20 | CRO | S21E10 | |
| 1998/02/18 | 3 | 10 | BXO | S21W03 | |
| 1998/02/19 | 3 | 10 | BXO | S22W14 | |
| 1998/02/20 | 4 | 20 | BXO | S21W29 | |
| 1998/02/23 | 2 | 10 | BXO | S20W69 | |
| 1998/02/24 | 5 | 70 | CSO | S19W82 |
| B |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B4.9 | 1998/02/18 | 06:31 | 06:36 | 06:38 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/26 | M4.0 |
| Last geomagnetic storm | 2026/03/25 | 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 | 81.4 +3.2 |
| Last 30 days | 81.4 +3.6 |