| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/08/12 | 1 | 90 | HSX | N14E74 | |
| 1997/08/13 | 1 | 70 | HSX | N15E61 | |
| 1997/08/14 | 1 | 60 | HSX | N14E49 | |
| 1997/08/15 | 1 | 60 | HSX | N14E36 | |
| 1997/08/16 | 1 | 70 | HSX | N15E23 | |
| 1997/08/17 | 1 | 70 | HSX | N15E08 | |
| 1997/08/18 | 1 | 60 | HSX | N15W04 | |
| 1997/08/19 | 1 | 60 | HSX | N14W17 | |
| 1997/08/20 | 1 | 60 | HSX | N14W31 | |
| 1997/08/21 | 1 | 50 | HSX | N14W44 | |
| 1997/08/22 | 1 | 60 | HSX | N13W60 | |
| 1997/08/23 | 1 | 70 | HSX | N14W71 | |
| 1997/08/24 | 1 | 20 | AXX | N13W85 |
| B |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B2.94 | 1997/08/12 | 09:27 | 09:32 | 09:37 |
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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 | 128.3 +42.3 |
| Last 30 days | 97.5 +35.7 |