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) | |
|---|---|---|---|---|---|---|---|---|
| № 1679 | S14 | E30 | 01 | 0010 | Alpha | Feb 24, 2013 | Mar 3, 2013 | Mar 17, 2013 |
| № 1678 | N11 | W54 | 13 | 0360 | Beta-Gamma-Delta | Feb 18, 2013 | Feb 25, 2013 | Mar 10, 2013 |
| № 1677 | S28 | E26 | 01 | 0010 | Alpha | Feb 24, 2013 | Mar 3, 2013 | Mar 17, 2013 |
| № 1676 | S19 | E26 | 02 | 0050 | Beta | Feb 24, 2013 | Mar 3, 2013 | Mar 17, 2013 |
| № 1675 | N12 | W23 | 01 | 0050 | Alpha | Feb 20, 2013 | Feb 27, 2013 | Mar 13, 2013 |
| № 1673 | S11 | E04 | 16 | 0080 | Beta | Feb 22, 2013 | Mar 1, 2013 | Mar 15, 2013 |
| № 1671 | N16 | W59 | 02 | 0090 | Alpha | Feb 18, 2013 | Feb 24, 2013 | Mar 10, 2013 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1984, January to 2013, February. Gray background - average solar cycle.
