Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 3, 2015. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2317 | N09 | W45 | 10 | 0060 | Beta | Apr 1, 2015 | Apr 7, 2015 | Apr 21, 2015 |
| № 2305 | S09 | W91 | 01 | 0220 | Alpha | Mar 28, 2015 | Apr 4, 2015 | Apr 17, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to April 2015. The gray background is the average SSN index.
