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) | |
|---|---|---|---|---|---|---|---|---|
| № 1184 | N15 | E31 | 01 | 0000 | Alpha | Apr 5, 2011 | Apr 12, 2011 | Apr 26, 2011 |
| № 1183 | N17 | E03 | 16 | 0220 | Beta | Apr 3, 2011 | Apr 10, 2011 | Apr 24, 2011 |
| № 1180 | N25 | W23 | 01 | 0010 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
| № 1176 | S15 | W63 | 04 | 0100 | Beta | Mar 29, 2011 | Apr 5, 2011 | Apr 19, 2011 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1982, January to 2011, April. Gray background - average solar cycle.
