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) | |
|---|---|---|---|---|---|---|---|---|
| № 2636 | N11 | E53 | 02 | 0010 | Alpha | Feb 21, 2017 | Feb 28, 2017 | Mar 13, 2017 |
| № 2635 | N13 | W66 | 01 | 0020 | Alpha | Feb 12, 2017 | Feb 19, 2017 | Mar 4, 2017 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1988, January to 2017, February. Gray background - average solar cycle.
