Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1915 | S29 | W08 | 03 | 0010 | Beta | Dec 4, 2013 | Dec 11, 2013 | Dec 26, 2013 |
| № 1913 | S15 | W69 | 09 | 0090 | Beta | Nov 30, 2013 | Dec 7, 2013 | Dec 20, 2013 |
| № 1912 | S21 | E53 | 01 | 0120 | Alpha | Dec 9, 2013 | Dec 16, 2013 | Dec 30, 2013 |
| № 1911 | S11 | W24 | 02 | 0020 | Alpha | Dec 3, 2013 | Dec 10, 2013 | Dec 24, 2013 |
| № 1909 | S18 | W07 | 17 | 0250 | Beta-Gamma | Dec 4, 2013 | Dec 11, 2013 | Dec 25, 2013 |
| № 1908 | S26 | W34 | 05 | 0080 | Beta | Dec 2, 2013 | Dec 9, 2013 | Dec 23, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to December 2013. The gray background is the average SSN index.
