Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 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) | |
|---|---|---|---|---|---|---|---|---|
| № 930 | S06 | W88 | 01 | 0230 | Beta-Gamma-Delta | Dec 12, 2006 | Dec 19, 2006 | Jan 2, 2007 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to December 2006. The gray background is the average SSN index.
