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) | |
|---|---|---|---|---|---|---|---|---|
| № 2653 | S08 | E36 | 02 | 0090 | Alpha | Apr 29, 2017 | May 5, 2017 | May 19, 2017 |
| № 2652 | N13 | E03 | 03 | 0010 | Beta | Apr 26, 2017 | May 3, 2017 | May 17, 2017 |
| № 2651 | N11 | W07 | 06 | 0110 | Alpha | Apr 25, 2017 | May 2, 2017 | May 16, 2017 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1988, January to 2017, April. Gray background - average solar cycle.
