Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 25, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1730 | S19 | E47 | 02 | 0010 | Beta | Apr 30, 2013 | May 6, 2013 | May 20, 2013 |
| № 1729 | S14 | W22 | 06 | 0010 | Beta | Apr 24, 2013 | May 1, 2013 | May 15, 2013 |
| № 1728 | N19 | E48 | 01 | 0060 | Alpha | Apr 30, 2013 | May 7, 2013 | May 20, 2013 |
| № 1727 | N25 | W11 | 03 | 0030 | Alpha | Apr 25, 2013 | May 2, 2013 | May 16, 2013 |
| № 1726 | N13 | W63 | 30 | 0840 | Beta-Gamma-Delta | Apr 21, 2013 | Apr 28, 2013 | May 12, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to April 2013. The gray background is the average SSN index.
