Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 909 | S08 | W95 | 01 | 0030 | Alpha | Sep 9, 2006 | Sep 16, 2006 | Sep 29, 2006 |
| № 908 | S13 | W47 | 04 | 0190 | Alpha | Sep 12, 2006 | Sep 19, 2006 | Oct 3, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to September 2006. The gray background is the average SSN index.
