Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 24, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1678 | N08 | W91 | 04 | 0350 | Beta-Gamma | Feb 18, 2013 | Feb 25, 2013 | Mar 10, 2013 |
| № 1676 | S13 | W18 | 02 | 0040 | Alpha | Feb 23, 2013 | Mar 2, 2013 | Mar 16, 2013 |
| № 1675 | N13 | W61 | 01 | 0040 | Alpha | Feb 20, 2013 | Feb 27, 2013 | Mar 13, 2013 |
| № 1673 | S10 | W34 | 09 | 0010 | Beta | Feb 22, 2013 | Mar 1, 2013 | Mar 15, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to February 2013. The gray background is the average SSN index.
