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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2329 | S08 | W46 | 06 | 0040 | Beta | Apr 17, 2015 | Apr 24, 2015 | May 8, 2015 |
| № 2328 | S01 | W82 | 01 | 0010 | Alpha | Apr 15, 2015 | Apr 21, 2015 | May 5, 2015 |
| № 2327 | S09 | E46 | 05 | 0140 | Beta | Apr 24, 2015 | May 1, 2015 | May 15, 2015 |
| № 2325 | N05 | E08 | 12 | 0220 | Beta | Apr 21, 2015 | Apr 28, 2015 | May 12, 2015 |
| № 2324 | N19 | W02 | 12 | 0330 | Beta | Apr 21, 2015 | Apr 28, 2015 | May 11, 2015 |
| № 2322 | N13 | W60 | 03 | 0010 | Beta | Apr 16, 2015 | Apr 23, 2015 | May 7, 2015 |
| № 2321 | N11 | W34 | 33 | 0130 | 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.
