| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/09/23 | 7 | 10 | BXO | N15E32 | |
| 2015/09/24 | 7 | 10 | BXO | N15E32 | |
| 2015/09/25 | 5 | 50 | CAI | N15E05 | |
| 2015/09/26 | 17 | 70 | DAC | N17W09 | |
| 2015/09/27 | 12 | 110 | DAC | N17W21 | |
| 2015/09/28 | 11 | 100 | DAI | N16W35 | |
| 2015/09/29 | 4 | 10 | BXO | N16W50 |
| B | C | M |
|---|---|---|
| 4 | 1 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.34 | 2015/09/27 | 19:44 | 19:58 | 20:05 | |
| 2 | C4.8 | 2015/09/24 | 23:41 | 23:47 | 00:07 | |
| 3 | B9.07 | 2015/09/24 | 04:47 | 04:51 | 04:58 | |
| 4 | B8.34 | 2015/09/24 | 11:31 | 11:35 | 11:39 | |
| 5 | B7.96 | 2015/09/24 | 18:49 | 18:54 | 18:57 | |
| 6 | B6.97 | 2015/09/24 | 07:58 | 08:01 | 08:08 |
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| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/13 | M1.0 |
| Last geomagnetic storm | 2026/02/15 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 112.1 -0.5 |
| Last 30 days | 128.2 +28 |