Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1696 | N05 | E21 | 05 | 0090 | Beta | Mar 15, 2013 | Mar 22, 2013 | Apr 5, 2013 |
| № 1695 | N09 | E60 | 01 | 0140 | Alpha | Mar 18, 2013 | Mar 25, 2013 | Apr 8, 2013 |
| № 1694 | N16 | E40 | 01 | 0020 | Alpha | Mar 17, 2013 | Mar 24, 2013 | Apr 6, 2013 |
| № 1692 | N09 | E37 | 01 | 0190 | Alpha | Mar 17, 2013 | Mar 23, 2013 | Apr 6, 2013 |
| № 1691 | N12 | W10 | 04 | 0060 | Beta | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1690 | N24 | W06 | 01 | 0010 | Beta | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1689 | S19 | W34 | 12 | 0100 | Beta | Mar 11, 2013 | Mar 18, 2013 | Apr 1, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to March 2013. The gray background is the average SSN index.
