| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/09/07 | 1 | 40 | HSX | S24E75 | |
| 1997/09/08 | 6 | 230 | EAO | S25E64 | |
| 1997/09/09 | 16 | 460 | FKI | S25E53 | |
| 1997/09/10 | 23 | 650 | FKI | S25E40 | |
| 1997/09/11 | 24 | 610 | FKI | S26E27 | |
| 1997/09/12 | 25 | 600 | FKI | S26E15 | |
| 1997/09/13 | 33 | 470 | FKI | S26E02 | |
| 1997/09/14 | 18 | 380 | FKI | S26W12 | |
| 1997/09/15 | 16 | 380 | FKI | S26W25 | |
| 1997/09/16 | 8 | 330 | FKO | S26W37 | |
| 1997/09/17 | 4 | 340 | HKX | S25W55 | |
| 1997/09/18 | 2 | 250 | HAX | S25W72 | |
| 1997/09/19 | 1 | 80 | HHX | S25W85 |
| B | C | M |
|---|---|---|
| 1 | 8 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.3 | 1997/09/09 | 09:45 | 09:53 | 10:03 | |
| 2 | M1.18 | 1997/09/19 | 01:39 | 01:50 | 01:53 | |
| 3 | C5.03 | 1997/09/08 | 17:35 | 17:39 | 17:46 | |
| 4 | C4.44 | 1997/09/07 | 06:06 | 06:20 | 06:29 | |
| 5 | C3.69 | 1997/09/09 | 18:35 | 18:44 | 18:52 | |
| 6 | C3.63 | 1997/09/14 | 10:43 | 11:15 | 11:28 | |
| 7 | C3.17 | 1997/09/08 | 10:24 | 10:30 | 10:39 | |
| 8 | C2.59 | 1997/09/08 | 13:42 | 14:03 | 14:07 | |
| 9 | C1.66 | 1997/09/17 | 17:25 | 17:30 | 17:37 | |
| 10 | C1.1 | 1997/09/08 | 16:06 | 16:13 | 16:28 |
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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 |