| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2016/09/16 | 2 | 10 | BXO | N14E66 | |
| 2016/09/17 | 3 | 10 | BXO | N14E53 | |
| 2016/09/18 | 4 | 10 | BXO | N14E39 | |
| 2016/09/19 | 5 | 10 | BXO | N14E27 | |
| 2016/09/20 | 2 | 20 | CRO | N12E14 |
| B |
|---|
| 8 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B9.31 | 2016/09/18 | 10:41 | 11:00 | 11:47 | |
| 2 | B8.46 | 2016/09/23 | 04:38 | 05:25 | 05:57 | |
| 3 | B7.09 | 2016/09/19 | 07:32 | 07:42 | 07:52 | |
| 4 | B5.42 | 2016/09/18 | 02:44 | 02:51 | 02:57 | |
| 5 | B5.22 | 2016/09/17 | 05:55 | 06:05 | 06:18 | |
| 6 | B2.57 | 2016/09/17 | 07:00 | 07:03 | 07:09 | |
| 7 | B2.36 | 2016/09/18 | 19:39 | 19:48 | 19:55 | |
| 8 | B2.21 | 2016/09/17 | 08:08 | 08:11 | 08:17 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/09 | M1.5 |
| 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 | 157.7 +65.9 |
| Last 30 days | 108.9 +11.4 |