Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 2007. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 956 | N04 | W18 | 13 | 0190 | Beta | May 21, 2007 | May 27, 2007 | Jun 10, 2007 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1978 to May 2007. The gray background is the average SSN index.
