| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/08/03 | 1 | 80 | HSX | S20E69 | |
| 1998/08/04 | 6 | 200 | FSO | S20E60 | |
| 1998/08/05 | 10 | 250 | FAO | S22E48 | |
| 1998/08/06 | 26 | 330 | FAC | S22E39 | |
| 1998/08/07 | 28 | 470 | FKC | S22E22 | |
| 1998/08/08 | 34 | 470 | FKC | S22E09 | |
| 1998/08/10 | 62 | 580 | FAC | S23W18 | |
| 1998/08/11 | 47 | 580 | FAC | S23W30 | |
| 1998/08/12 | 38 | 420 | FAC | S22W44 | |
| 1998/08/13 | 21 | 390 | FAC | S23W58 | |
| 1998/08/14 | 14 | 220 | FAC | S22W70 | |
| 1998/08/15 | 8 | 80 | ESO | S23W78 |
| B | C | M |
|---|---|---|
| 2 | 12 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M4.44 | 1998/08/14 | 08:19 | 08:28 | 08:32 | |
| 2 | M1.37 | 1998/08/13 | 17:50 | 17:56 | 18:00 | |
| 3 | M1.09 | 1998/08/15 | 06:21 | 06:33 | 06:38 | |
| 4 | C5 | 1998/08/09 | 16:19 | 16:26 | 16:41 | |
| 5 | C2.69 | 1998/08/07 | 23:34 | 23:43 | 23:53 | |
| 6 | C2.63 | 1998/08/13 | 19:20 | 19:25 | 19:28 | |
| 7 | C2.33 | 1998/08/10 | 10:59 | 11:03 | 11:07 | |
| 8 | C2.13 | 1998/08/06 | 19:45 | 19:54 | 20:01 | |
| 9 | C2.04 | 1998/08/06 | 14:22 | 14:28 | 14:33 | |
| 10 | C1.87 | 1998/08/07 | 16:16 | 16:22 | 16:26 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/09 | M1.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 160.6 +68.8 |
| Last 30 days | 108.7 +12.8 |