| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/04/02 | 8 | 60 | CAO | N08E22 | |
| 2013/04/03 | 6 | 30 | CRO | N10E08 | |
| 2013/04/04 | 17 | 30 | CRO | N09W06 | |
| 2013/04/05 | 19 | 70 | DAI | N10W19 | |
| 2013/04/06 | 16 | 130 | DAI | N10W33 | |
| 2013/04/07 | 13 | 120 | DAI | N11W47 | |
| 2013/04/08 | 16 | 190 | CSO | N09W61 | |
| 2013/04/09 | 16 | 180 | DAO | N09W74 | |
| 2013/04/10 | 7 | 180 | DAI | N08W88 | |
| 2013/04/11 | 7 | 180 | DAI | N08W0* |
| B | C |
|---|---|
| 3 | 11 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C6.07 | 2013/04/10 | 19:02 | 19:19 | 19:41 | |
| 2 | C5.62 | 2013/04/10 | 23:30 | 23:38 | 23:48 | |
| 3 | C3.12 | 2013/04/09 | 00:14 | 00:21 | 00:30 | |
| 4 | C2.31 | 2013/04/07 | 16:49 | 16:58 | 17:09 | |
| 5 | C2.19 | 2013/04/08 | 23:45 | 23:48 | 23:51 | |
| 6 | C1.78 | 2013/04/04 | 09:49 | 09:57 | 10:03 | |
| 7 | C1.47 | 2013/04/10 | 11:53 | 11:56 | 11:58 | |
| 8 | C1.35 | 2013/04/02 | 15:10 | 15:15 | 15:19 | |
| 9 | C1.34 | 2013/04/03 | 17:09 | 17:17 | 17:26 | |
| 10 | C1.27 | 2013/04/08 | 03:56 | 04:02 | 04:25 |
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| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/12 | M1.4 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 121.7 +9.1 |
| Last 30 days | 131.5 +34.7 |