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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 10, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1719 | N10 | E28 | 11 | 0160 | Beta-Gamma | Apr 13, 2013 | Apr 20, 2013 | May 3, 2013 |
| № 1718 | N21 | W04 | 21 | 0190 | Beta-Gamma | Apr 11, 2013 | Apr 17, 2013 | May 1, 2013 |
| № 1717 | S11 | E13 | 03 | 0020 | Beta | Apr 12, 2013 | Apr 19, 2013 | May 2, 2013 |
| № 1714 | N12 | W24 | 03 | 0060 | Beta | Apr 9, 2013 | Apr 16, 2013 | Apr 29, 2013 |
| № 1713 | N09 | W72 | 16 | 0180 | Beta | Apr 5, 2013 | Apr 12, 2013 | Apr 26, 2013 |
| № 1711 | S17 | W53 | 02 | 0350 | Alpha | Apr 7, 2013 | Apr 14, 2013 | Apr 27, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to April 2013. The gray background is the average SSN index.
