Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 858 | N18 | E17 | 08 | 0020 | Beta | Mar 15, 2006 | Mar 22, 2006 | Apr 5, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to March 2006. The gray background is the average SSN index.
