Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1175 | N13 | W07 | 06 | 0020 | Beta | Mar 19, 2011 | Mar 26, 2011 | Apr 9, 2011 |
| № 1173 | S29 | E16 | 09 | 0030 | Beta | Mar 21, 2011 | Mar 28, 2011 | Apr 11, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to March 2011. The gray background is the average SSN index.
