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) | |
|---|---|---|---|---|---|---|---|---|
| № 755 | S12 | E21 | 01 | 0010 | Alpha | Apr 25, 2005 | May 1, 2005 | May 15, 2005 |
| № 752 | N03 | W55 | 01 | 0060 | Alpha | Apr 19, 2005 | Apr 26, 2005 | May 9, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, April. Gray background - average solar cycle.
