| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2017/04/10 | 3 | 20 | CRO | N09E71 | |
| 2017/04/11 | 3 | 40 | CAO | N09E56 | |
| 2017/04/12 | 2 | 40 | CAO | N11E40 | |
| 2017/04/13 | 3 | 20 | CSO | N10E27 | |
| 2017/04/14 | 2 | 20 | CSO | N08E14 | |
| 2017/04/15 | 1 | 10 | HRX | N08E03 | |
| 2017/04/16 | 1 | 10 | AXX | N08W11 |
| B |
|---|
| 11 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B6.38 | 2017/04/10 | 18:16 | 18:23 | 18:28 | |
| 2 | B5.09 | 2017/04/11 | 02:56 | 03:00 | 03:04 | |
| 3 | B3.47 | 2017/04/10 | 04:23 | 04:36 | 04:47 | |
| 4 | B1.8 | 2017/04/10 | 21:17 | 21:22 | 21:26 | |
| 5 | B1.6 | 2017/04/11 | 19:38 | 19:45 | 19:53 | |
| 6 | B1.47 | 2017/04/11 | 10:59 | 11:11 | 11:16 | |
| 7 | B1.41 | 2017/04/11 | 03:45 | 04:00 | 04:12 | |
| 8 | B1.39 | 2017/04/10 | 09:53 | 09:58 | 10:12 | |
| 9 | B1.37 | 2017/04/12 | 00:07 | 00:11 | 00:32 | |
| 10 | B1.13 | 2017/04/11 | 18:46 | 18:50 | 18:54 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 150 +58.2 |
| Last 30 days | 108.8 +10.3 |