| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2017/01/21 | 12 | 70 | DAO | N05E28 | |
| 2017/01/22 | 13 | 80 | DAI | N06E15 | |
| 2017/01/23 | 11 | 110 | DAI | N06E01 | |
| 2017/01/24 | 13 | 70 | DAI | N06W12 | |
| 2017/01/25 | 4 | 30 | CRO | N06W25 | |
| 2017/01/26 | 2 | 10 | BXO | N06W39 |
| B | C |
|---|---|
| 3 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.06 | 2017/01/28 | 20:56 | 21:09 | 21:21 | |
| 2 | B7.22 | 2017/01/27 | 10:38 | 10:45 | 10:52 | |
| 3 | B5.26 | 2017/01/20 | 17:09 | 17:12 | 17:16 | |
| 4 | B3.22 | 2017/01/20 | 20:57 | 21:00 | 21:04 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | 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 | 162.7 +70.9 |
| Last 30 days | 108 +13.3 |