Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 18, 2006. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 855 | N05 | E17 | 02 | 0010 | Alpha | Feb 20, 2006 | Feb 27, 2006 | Mar 12, 2006 |
| № 854 | S08 | W07 | 01 | 0010 | Alpha | Feb 18, 2006 | Feb 25, 2006 | Mar 11, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to February 2006. The gray background is the average SSN index.
