| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/12/30 | 5 | 20 | BXO | S29E30 | |
| 1997/12/31 | 11 | 50 | DAO | S29E16 | |
| 1998/01/01 | 10 | 70 | DAO | S29E03 | |
| 1998/01/02 | 13 | 70 | DSO | S29W11 | |
| 1998/01/03 | 10 | 50 | DSO | S28W23 | |
| 1998/01/04 | 4 | 10 | BXO | S28W35 | |
| 1998/01/05 | 3 | 10 | BXO | S28W47 | |
| 1998/01/07 | 1 | 10 | AXX | S29W64 |
| B |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B5.61 | 1998/01/02 | 16:20 | 16:26 | 16:29 |
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/09 | 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 | 118.8 +32.8 |
| Last 30 days | 102.1 +47 |