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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1694 | N15 | E66 | 01 | 0030 | Alpha | Mar 17, 2013 | Mar 24, 2013 | Apr 6, 2013 |
| № 1693 | N18 | W30 | 03 | 0020 | Beta | Mar 10, 2013 | Mar 17, 2013 | Mar 30, 2013 |
| № 1692 | N09 | E60 | 01 | 0220 | Alpha | Mar 17, 2013 | Mar 23, 2013 | Apr 6, 2013 |
| № 1691 | N13 | E16 | 07 | 0060 | Beta | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1690 | N24 | E17 | 01 | 0020 | Alpha | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1689 | S19 | W11 | 16 | 0140 | 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.
