| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/07/31 | 1 | 120 | HSX | N12E65 | |
| 2015/08/01 | 2 | 120 | HAX | N12E54 | |
| 2015/08/02 | 4 | 140 | HSX | N12E41 | |
| 2015/08/03 | 3 | 140 | HAX | N12E28 | |
| 2015/08/04 | 4 | 120 | CAO | N12E14 | |
| 2015/08/05 | 8 | 130 | DAI | N11E01 | |
| 2015/08/06 | 12 | 120 | CAO | N11W12 | |
| 2015/08/07 | 7 | 100 | CAO | N11W25 | |
| 2015/08/08 | 8 | 80 | CAO | N11W38 | |
| 2015/08/09 | 4 | 80 | CSO | N12W52 | |
| 2015/08/10 | 2 | 50 | CSO | N12W64 | |
| 2015/08/11 | 1 | 40 | HSX | N12W77 | |
| 2015/08/12 | 1 | 30 | HSX | N12W90 | |
| 2015/08/13 | 1 | 30 | HSX | N12W0* |
| B | C |
|---|---|
| 4 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.97 | 2015/08/07 | 18:11 | 18:15 | 18:19 | |
| 2 | C1.12 | 2015/08/01 | 17:47 | 17:51 | 17:56 | |
| 3 | C1.04 | 2015/08/08 | 15:09 | 15:15 | 15:23 | |
| 4 | B9.36 | 2015/08/12 | 10:26 | 10:29 | 10:33 | |
| 5 | B9.22 | 2015/08/07 | 15:57 | 16:01 | 16:12 | |
| 6 | B7.73 | 2015/08/05 | 04:47 | 04:51 | 04:53 | |
| 7 | B5.78 | 2015/08/01 | 21:00 | 21:03 | 21:09 |
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| 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 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |