Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 2007. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 970 | S07 | W32 | 05 | 0030 | Beta | Sep 2, 2007 | Sep 9, 2007 | Sep 23, 2007 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1978 to September 2007. The gray background is the average SSN index.
