Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2325 | N05 | E56 | 04 | 0200 | Beta | Apr 21, 2015 | Apr 28, 2015 | May 12, 2015 |
| № 2324 | N18 | E46 | 07 | 0430 | Beta | Apr 21, 2015 | Apr 27, 2015 | May 11, 2015 |
| № 2323 | S17 | W85 | 01 | 0030 | Alpha | Apr 11, 2015 | Apr 17, 2015 | May 1, 2015 |
| № 2322 | N14 | W13 | 03 | 0010 | Beta | Apr 16, 2015 | Apr 23, 2015 | May 6, 2015 |
| № 2321 | N12 | E16 | 20 | 0480 | Beta-Gamma | Apr 18, 2015 | Apr 25, 2015 | May 9, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to April 2015. The gray background is the average SSN index.
