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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 6, 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 | N08 | E79 | 01 | 0090 | Alpha | Apr 13, 2013 | Apr 20, 2013 | May 3, 2013 |
| № 1718 | N23 | E46 | 02 | 0010 | Alpha | Apr 10, 2013 | Apr 17, 2013 | May 1, 2013 |
| № 1717 | S10 | E67 | 03 | 0010 | Alpha | Apr 12, 2013 | Apr 19, 2013 | May 2, 2013 |
| № 1716 | S19 | E33 | 02 | 0010 | Alpha | Apr 9, 2013 | Apr 16, 2013 | Apr 30, 2013 |
| № 1715 | N17 | W27 | 05 | 0030 | Beta | Apr 5, 2013 | Apr 12, 2013 | Apr 25, 2013 |
| № 1714 | N12 | E28 | 01 | 0050 | Alpha | Apr 9, 2013 | Apr 16, 2013 | Apr 29, 2013 |
| № 1713 | N10 | W18 | 19 | 0070 | Beta | Apr 6, 2013 | Apr 12, 2013 | Apr 26, 2013 |
| № 1711 | S15 | W01 | 06 | 0530 | Beta | Apr 7, 2013 | Apr 14, 2013 | Apr 27, 2013 |
| № 1710 | S21 | W43 | 06 | 0050 | Beta | Apr 4, 2013 | Apr 11, 2013 | Apr 24, 2013 |
| № 1708 | N13 | W38 | 01 | 0010 | Alpha | Apr 4, 2013 | Apr 11, 2013 | Apr 24, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to April 2013. The gray background is the average SSN index.
