| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/08/27 | 11 | 40 | BXO | N21E10 | |
| 1998/08/28 | 22 | 80 | DSI | N19W03 | |
| 1998/08/29 | 44 | 180 | DAO | N18W15 | |
| 1998/08/30 | 32 | 270 | DAI | N19W29 | |
| 1998/08/31 | 27 | 570 | EKI | N18W41 | |
| 1998/09/01 | 26 | 740 | EKO | N19W54 | |
| 1998/09/02 | 24 | 670 | EKI | N19W68 | |
| 1998/09/03 | 13 | 710 | FKO | N19W81 | |
| 1998/09/04 | 3 | 190 | DKC | N21W89 |
| C | M |
|---|---|
| 7 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.29 | 1998/09/02 | 16:44 | 17:07 | 17:18 | |
| 2 | M1.97 | 1998/08/30 | 18:00 | 18:05 | 18:09 | |
| 3 | M1.57 | 1998/08/30 | 09:29 | 09:37 | 09:43 | |
| 4 | C6.17 | 1998/08/30 | 03:33 | 03:41 | 03:52 | |
| 5 | C5.54 | 1998/09/01 | 18:11 | 18:17 | 18:21 | |
| 6 | C4.97 | 1998/09/01 | 02:11 | 02:14 | 02:20 | |
| 7 | C4.13 | 1998/08/30 | 14:46 | 14:51 | 14:54 | |
| 8 | C4.07 | 1998/08/30 | 21:48 | 21:54 | 21:59 | |
| 9 | C2.57 | 1998/08/30 | 00:36 | 00:41 | 00:49 | |
| 10 | C2.56 | 1998/08/29 | 04:54 | 04:59 | 05:07 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| 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 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |