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) | |
|---|---|---|---|---|---|---|---|---|
| № 2428 | S04 | W91 | 01 | 0010 | alpha | Sep 24, 2015 | Oct 1, 2015 | Oct 14, 2015 |
| № 2427 | N18 | E10 | 12 | 0180 | beta | Oct 2, 2015 | Oct 9, 2015 | Oct 22, 2015 |
| № 2422 | S18 | W54 | 23 | 0860 | beta-gamma-delta | Sep 27, 2015 | Oct 4, 2015 | Oct 17, 2015 |
| № 2420 | N12 | W56 | 02 | 0040 | beta | Sep 27, 2015 | Oct 3, 2015 | Oct 17, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, October. Gray background - average solar cycle.
