| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/08/06 | 6 | 10 | BXO | N21W35 | |
| 1997/08/07 | 11 | 100 | DAO | N21W48 | |
| 1997/08/08 | 14 | 100 | DAO | N21W62 | |
| 1997/08/09 | 8 | 110 | DSO | N23W74 | |
| 1997/08/10 | 5 | 30 | CSO | N21W86 |
| B | C | M |
|---|---|---|
| 5 | 1 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.13 | 1997/08/09 | 16:30 | 16:34 | 16:38 | |
| 2 | C1.37 | 1997/08/09 | 12:04 | 12:13 | 12:22 | |
| 3 | B7.11 | 1997/08/09 | 16:07 | 16:13 | 16:15 | |
| 4 | B6.4 | 1997/08/06 | 05:59 | 06:06 | 06:12 | |
| 5 | B2.71 | 1997/08/07 | 13:02 | 13:06 | 13:08 | |
| 6 | B2.36 | 1997/08/08 | 12:47 | 12:51 | 12:55 | |
| 7 | B1.39 | 1997/08/07 | 11:36 | 11:39 | 11:41 |
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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 | 121 +35.1 |
| Last 30 days | 101.1 +44.7 |