Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1674 | N14 | W03 | 03 | 0010 | Beta | Feb 17, 2013 | Feb 24, 2013 | Mar 9, 2013 |
| № 1673 | S11 | E67 | 01 | 0040 | Alpha | Feb 22, 2013 | Mar 1, 2013 | Mar 14, 2013 |
| № 1672 | S17 | W15 | 01 | 0010 | Alpha | Feb 16, 2013 | Feb 23, 2013 | Mar 8, 2013 |
| № 1671 | N14 | E04 | 01 | 0090 | Alpha | Feb 17, 2013 | Feb 24, 2013 | Mar 10, 2013 |
| № 1670 | N17 | W85 | 03 | 0070 | Beta | Feb 11, 2013 | Feb 17, 2013 | Mar 3, 2013 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1984, January to 2013, February. Gray background - average solar cycle.
