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) | |
|---|---|---|---|---|---|---|---|---|
| № 2431 | S17 | E76 | 01 | 0030 | Alpha | Oct 18, 2015 | Oct 25, 2015 | Nov 7, 2015 |
| № 2430 | S17 | E34 | 01 | 0020 | Alpha | Oct 15, 2015 | Oct 21, 2015 | Nov 4, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, October. Gray background - average solar cycle.
