| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2016/09/19 | 9 | 20 | CRI | N07E11 | |
| 2016/09/20 | 8 | 60 | DAO | N09W04 | |
| 2016/09/21 | 5 | 50 | CSO | N09W18 | |
| 2016/09/22 | 11 | 60 | DAI | N06W32 | |
| 2016/09/23 | 7 | 70 | DAO | N08W45 | |
| 2016/09/24 | 9 | 50 | EAO | N09W59 | |
| 2016/09/25 | 4 | 30 | CRO | N07W72 |
| B | C |
|---|---|
| 2 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.35 | 2016/09/21 | 10:23 | 10:39 | 11:19 | |
| 2 | B9.85 | 2016/09/21 | 13:34 | 13:38 | 13:46 | |
| 3 | B3.5 | 2016/09/25 | 03:06 | 03:31 | 03:55 |
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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 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |