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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 2008. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 996 | N10 | E07 | 02 | 0010 | Beta | May 22, 2008 | May 29, 2008 | Jun 12, 2008 |
| № 994 | S12 | W48 | 01 | 0010 | Alpha | May 18, 2008 | May 25, 2008 | Jun 8, 2008 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1979 to May 2008. The gray background is the average SSN index.
