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) | |
|---|---|---|---|---|---|---|---|---|
| № 1200 | S17 | E43 | 04 | 0010 | Beta | May 1, 2011 | May 8, 2011 | May 22, 2011 |
| № 1199 | N21 | W22 | 08 | 0020 | Beta | Apr 26, 2011 | May 3, 2011 | May 17, 2011 |
| № 1196 | S28 | E03 | 01 | 0005 | Alpha | Apr 28, 2011 | May 5, 2011 | May 19, 2011 |
| № 1195 | S17 | W24 | 04 | 0210 | Beta | Apr 26, 2011 | May 3, 2011 | May 17, 2011 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1982, January to 2011, April. Gray background - average solar cycle.
