Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 11, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1170 | S25 | W92 | 06 | 0020 | Alpha | Mar 5, 2011 | Mar 12, 2011 | Mar 26, 2011 |
| № 1169 | N20 | E06 | 15 | 0160 | Beta-Gamma | Mar 12, 2011 | Mar 19, 2011 | Apr 2, 2011 |
| № 1167 | N12 | W64 | 02 | 0010 | Beta | Mar 7, 2011 | Mar 14, 2011 | Mar 27, 2011 |
| № 1166 | N09 | W24 | 25 | 0750 | Beta-Gamma | Mar 10, 2011 | Mar 17, 2011 | Mar 30, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to March 2011. The gray background is the average SSN index.
