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) | |
|---|---|---|---|---|---|---|---|---|
| № 748 | N09 | E60 | 01 | 0020 | Alpha | Apr 6, 2005 | Apr 13, 2005 | Apr 27, 2005 |
| № 747 | S07 | E24 | 01 | 0010 | Alpha | Apr 4, 2005 | Apr 11, 2005 | Apr 24, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, April. Gray background - average solar cycle.
