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) | |
|---|---|---|---|---|---|---|---|---|
| № 2317 | N10 | W30 | 06 | 0030 | Beta | Apr 1, 2015 | Apr 7, 2015 | Apr 21, 2015 |
| № 2316 | S21 | E08 | 02 | 0000 | Alpha | Apr 3, 2015 | Apr 10, 2015 | Apr 24, 2015 |
| № 2315 | S21 | W64 | 06 | 0010 | Beta | Mar 29, 2015 | Apr 5, 2015 | Apr 19, 2015 |
| № 2312 | N08 | W56 | 03 | 0010 | Beta | Mar 30, 2015 | Apr 5, 2015 | Apr 19, 2015 |
| № 2305 | S10 | W78 | 02 | 0470 | Beta | Mar 28, 2015 | Apr 4, 2015 | Apr 17, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, April. Gray background - average solar cycle.
