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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1187 | S18 | E25 | 03 | 0020 | Beta | Apr 14, 2011 | Apr 21, 2011 | May 4, 2011 |
| № 1186 | N23 | E08 | 08 | 0070 | Beta | Apr 12, 2011 | Apr 19, 2011 | May 3, 2011 |
| № 1185 | N17 | W06 | 15 | 0060 | Beta | Apr 11, 2011 | Apr 18, 2011 | May 2, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to April 2011. The gray background is the average SSN index.
