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) | |
|---|---|---|---|---|---|---|---|---|
| № 2333 | N21 | W11 | 03 | 0010 | alpha | Apr 28, 2015 | May 5, 2015 | May 19, 2015 |
| № 2331 | S09 | W86 | 02 | 0210 | beta | Apr 22, 2015 | Apr 29, 2015 | May 13, 2015 |
| № 2327 | S07 | W76 | 01 | 0020 | alpha | Apr 23, 2015 | Apr 30, 2015 | May 14, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, April. Gray background - average solar cycle.
