Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2408 | S12 | W77 | 01 | 0000 | Alpha | Aug 27, 2015 | Sep 3, 2015 | Sep 17, 2015 |
| № 2407 | N15 | W62 | 05 | 0020 | Beta | Aug 28, 2015 | Sep 4, 2015 | Sep 18, 2015 |
| № 2406 | N03 | E09 | 03 | 0020 | Beta | Sep 3, 2015 | Sep 9, 2015 | Sep 23, 2015 |
| № 2405 | S21 | W03 | 01 | 0000 | Alpha | Sep 2, 2015 | Sep 9, 2015 | Sep 22, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, September. Gray background - average solar cycle.
