| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/06/02 | 2 | 10 | HRX | S18E49 | |
| 2021/06/03 | 4 | 10 | CRO | S18E34 | |
| 2021/06/04 | 5 | 20 | CAO | S18E23 | |
| 2021/06/05 | 7 | 30 | CRO | S18E10 | |
| 2021/06/06 | 5 | 10 | BXO | S18W04 | |
| 2021/06/07 | 8 | 60 | DSO | S18W18 | |
| 2021/06/08 | 12 | 50 | DSO | S17W29 | |
| 2021/06/09 | 3 | 20 | DSO | S17W43 | |
| 2021/06/10 | 3 | 10 | AXX | S20W53 | |
| 2021/06/11 | 1 | 10 | AXX | S20W67 |
| B |
|---|
| 21 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B5.8 | 2021/06/03 | 01:57 | 02:05 | 02:09 | |
| 2 | B2.4 | 2021/06/05 | 23:57 | 00:03 | 00:10 | |
| 3 | B2.3 | 2021/06/04 | 01:20 | 01:30 | 01:43 | |
| 4 | B2.2 | 2021/06/05 | 00:20 | 00:29 | 00:39 | |
| 5 | B2.1 | 2021/06/04 | 00:45 | 00:54 | 01:00 | |
| 6 | B2.1 | 2021/06/07 | 01:19 | 01:27 | 01:32 | |
| 7 | B1.9 | 2021/06/04 | 02:09 | 02:16 | 02:20 | |
| 8 | B1.8 | 2021/06/04 | 01:02 | 01:06 | 01:12 | |
| 9 | B1.7 | 2021/06/06 | 01:13 | 01:21 | 01:27 | |
| 10 | B1.7 | 2021/06/06 | 19:02 | 19:18 | 19:27 |
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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 |