Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 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) | |
|---|---|---|---|---|---|---|---|---|
| № 861 | S11 | E22 | 02 | 0010 | Alpha | Mar 21, 2006 | Mar 27, 2006 | Apr 10, 2006 |
| № 860 | S04 | E12 | 02 | 0020 | Alpha | Mar 20, 2006 | Mar 27, 2006 | Apr 9, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to March 2006. The gray background is the average SSN index.
