| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/12/08 | 1 | 40 | HAX | S05E58 | |
| 2015/12/09 | 6 | 80 | CAO | S05E50 | |
| 2015/12/10 | 6 | 90 | CSO | S06E35 | |
| 2015/12/11 | 5 | 80 | CSO | S05E24 | |
| 2015/12/12 | 2 | 50 | HAX | S05E09 | |
| 2015/12/13 | 3 | 30 | HAX | S05W05 | |
| 2015/12/14 | 4 | 20 | CAO | S06W17 | |
| 2015/12/15 | 2 | 10 | AXX | S06W31 |
| B | C |
|---|---|
| 3 | 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C8.02 | 2015/12/11 | 16:48 | 17:16 | 17:28 | |
| 2 | C2.86 | 2015/12/12 | 03:09 | 03:16 | 03:21 | |
| 3 | C2.43 | 2015/12/12 | 17:26 | 17:34 | 17:52 | |
| 4 | C1.59 | 2015/12/07 | 03:49 | 04:19 | 04:47 | |
| 5 | C1.1 | 2015/12/11 | 03:01 | 03:07 | 03:12 | |
| 6 | B7.68 | 2015/12/10 | 16:47 | 17:05 | 17:12 | |
| 7 | B5.05 | 2015/12/07 | 07:29 | 07:33 | 07:39 | |
| 8 | B4.76 | 2015/12/07 | 09:01 | 09:04 | 09:10 |
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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 |