| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/05/20 | 3 | 10 | BXO | N22E49 | |
| 2015/05/21 | 4 | 20 | CSO | N22E34 | |
| 2015/05/23 | 1 | 10 | AXX | N22E05 |
| B | C |
|---|---|
| 4 | 2 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.34 | 2015/05/19 | 11:54 | 11:59 | 12:02 | |
| 2 | C1.94 | 2015/05/20 | 03:48 | 04:04 | 04:27 | |
| 3 | B7.94 | 2015/05/20 | 15:02 | 15:07 | 15:12 | |
| 4 | B6.6 | 2015/05/26 | 11:44 | 11:49 | 12:02 | |
| 5 | B4.87 | 2015/05/27 | 10:38 | 10:42 | 10:47 | |
| 6 | B3.97 | 2015/05/28 | 01:51 | 01:56 | 02:01 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/27 | M5.1 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 115.5 +23.7 |
| Last 30 days | 113.8 +28 |