Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 4, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1043 | N25 | W16 | 01 | 0050 | Alpha | Feb 4, 2010 | Feb 11, 2010 | Feb 25, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to February 2010. The gray background is the average SSN index.
