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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 7, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1186 | N22 | E59 | 01 | 0010 | Alpha | Apr 12, 2011 | Apr 19, 2011 | May 3, 2011 |
| № 1185 | N22 | E39 | 05 | 0070 | Beta | Apr 11, 2011 | Apr 18, 2011 | May 2, 2011 |
| № 1184 | N16 | W40 | 09 | 0110 | Beta | Apr 5, 2011 | Apr 12, 2011 | Apr 25, 2011 |
| № 1183 | N15 | W70 | 01 | 0040 | Alpha | Apr 3, 2011 | Apr 9, 2011 | Apr 23, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to April 2011. The gray background is the average SSN index.
