Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1688 | S17 | E54 | 01 | 0020 | Alpha | Mar 9, 2013 | Mar 16, 2013 | Mar 30, 2013 |
| № 1687 | N06 | E67 | 03 | 0030 | Beta | Mar 10, 2013 | Mar 17, 2013 | Mar 30, 2013 |
| № 1686 | S13 | W29 | 06 | 0030 | Beta | Mar 3, 2013 | Mar 9, 2013 | Mar 23, 2013 |
| № 1685 | S15 | E48 | 03 | 0020 | Beta | Mar 8, 2013 | Mar 15, 2013 | Mar 29, 2013 |
| № 1684 | N17 | W13 | 03 | 0010 | Beta | Mar 4, 2013 | Mar 11, 2013 | Mar 24, 2013 |
| № 1683 | S16 | E32 | 14 | 0200 | Beta | Mar 7, 2013 | Mar 14, 2013 | Mar 28, 2013 |
| № 1682 | S18 | W66 | 03 | 0200 | Beta | Feb 28, 2013 | Mar 7, 2013 | Mar 20, 2013 |
| № 1681 | N17 | W19 | 02 | 0010 | Alpha | Mar 3, 2013 | Mar 10, 2013 | Mar 24, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to March 2013. The gray background is the average SSN index.
