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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1761 | S18 | E39 | 01 | 0010 | Alpha | Jun 4, 2013 | Jun 11, 2013 | Jun 24, 2013 |
| № 1760 | N12 | E53 | 04 | 0010 | Beta | Jun 5, 2013 | Jun 12, 2013 | Jun 25, 2013 |
| № 1758 | S22 | E23 | 02 | 0010 | Alpha | Jun 3, 2013 | Jun 10, 2013 | Jun 23, 2013 |
| № 1757 | S08 | E02 | 01 | 0030 | Alpha | Jun 1, 2013 | Jun 8, 2013 | Jun 21, 2013 |
| № 1756 | S18 | W71 | 02 | 0070 | Alpha | May 26, 2013 | Jun 2, 2013 | Jun 16, 2013 |
| № 1755 | N12 | W57 | 01 | 0010 | Alpha | May 28, 2013 | Jun 3, 2013 | Jun 17, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to May 2013. The gray background is the average SSN index.
