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) | |
|---|---|---|---|---|---|---|---|---|
| № 2722 | S07 | E03 | 01 | 0000 | Alpha | Sep 14, 2018 | Sep 21, 2018 | Oct 4, 2018 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1989, January to 2018, September. Gray background - average solar cycle.
