| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/07/09 | 2 | 120 | HSX | S18E62 | |
| 2015/07/10 | 1 | 140 | HSX | S17E47 | |
| 2015/07/11 | 4 | 180 | CSO | S18E36 | |
| 2015/07/12 | 5 | 180 | CAO | S18E23 | |
| 2015/07/13 | 7 | 170 | CAO | S18E09 | |
| 2015/07/14 | 8 | 170 | CSO | S18W05 | |
| 2015/07/15 | 3 | 150 | CSO | S18W18 | |
| 2015/07/16 | 5 | 120 | CSO | S18W29 | |
| 2015/07/17 | 4 | 90 | HSX | S18W43 | |
| 2015/07/18 | 1 | 80 | HSX | S17W57 | |
| 2015/07/19 | 1 | 90 | HSX | S17W69 | |
| 2015/07/20 | 1 | 60 | HSX | S17W80 |
| B | C |
|---|---|
| 1 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1 | 2015/07/10 | 01:21 | 01:26 | 01:30 | |
| 2 | B7.27 | 2015/07/21 | 05:23 | 05:47 | 06:20 |
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M7.6 |
| Last geomagnetic storm | 2026/04/02 | Kp6- (G2) |
| 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 | 141 +55.1 |
| Last 30 days | 95.4 +31.2 |