Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 910 | S09 | E37 | 01 | 0030 | Alpha | Sep 24, 2006 | Oct 1, 2006 | Oct 14, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to September 2006. The gray background is the average SSN index.
