| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/03/12 | 6 | 40 | CSO | N05E34 | |
| 2013/03/13 | 12 | 150 | DSI | N05E04 | |
| 2013/03/14 | 15 | 150 | EAI | N05W09 | |
| 2013/03/15 | 14 | 140 | EAI | N05W22 | |
| 2013/03/16 | 10 | 190 | EAI | N04W36 | |
| 2013/03/17 | 16 | 190 | EAI | N05W49 | |
| 2013/03/18 | 16 | 190 | EAI | N05W63 | |
| 2013/03/19 | 10 | 180 | EAI | N05W77 |
| B | C |
|---|---|
| 1 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.23 | 2013/03/15 | 10:39 | 10:44 | 10:46 | |
| 2 | C2 | 2013/03/13 | 16:15 | 16:20 | 16:25 | |
| 3 | C1.53 | 2013/03/15 | 15:09 | 15:17 | 15:22 | |
| 4 | B9.66 | 2013/03/17 | 00:51 | 00:54 | 01:02 |
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| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/04/26 | M6.0 |
| Last geomagnetic storm | 2026/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 85 -0.9 |
| Last 30 days | 90.9 +8.3 |