| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/03/12 | 1 | 80 | HSX | N09E70 | |
| 2013/03/13 | 1 | 160 | HSX | N09E44 | |
| 2013/03/14 | 1 | 160 | HSX | N09E31 | |
| 2013/03/15 | 2 | 110 | HAX | N10E18 | |
| 2013/03/16 | 1 | 180 | HAX | N10E05 | |
| 2013/03/17 | 3 | 180 | CSO | N10W09 | |
| 2013/03/18 | 9 | 180 | DAO | N10W23 | |
| 2013/03/19 | 6 | 150 | DAO | N10W37 | |
| 2013/03/20 | 4 | 130 | DAO | N10W51 | |
| 2013/03/21 | 2 | 110 | CAO | N10W65 | |
| 2013/03/22 | 3 | 100 | CAO | N10W79 | |
| 2013/03/23 | 1 | 60 | HSX | N09W90 | |
| 2013/03/24 | 1 | 60 | HSX | N09W0* |
| B | C |
|---|---|
| 2 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.29 | 2013/03/11 | 16:40 | 16:55 | 17:07 | |
| 2 | C2.21 | 2013/03/19 | 13:50 | 14:23 | 14:42 | |
| 3 | C1.47 | 2013/03/17 | 14:40 | 14:49 | 14:56 | |
| 4 | C1.43 | 2013/03/12 | 14:10 | 14:16 | 14:24 | |
| 5 | B9.02 | 2013/03/22 | 13:42 | 13:48 | 13:54 | |
| 6 | B7.59 | 2013/03/23 | 02:29 | 02:40 | 03:28 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/28 | M1.3 |
| Last geomagnetic storm | 2026/03/25 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 84 +5.8 |
| Last 30 days | 84 +6.2 |