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) | |
|---|---|---|---|---|---|---|---|---|
| № 754 | S08 | E24 | 05 | 0040 | Beta | Apr 20, 2005 | Apr 27, 2005 | May 10, 2005 |
| № 753 | N12 | W44 | 01 | 0010 | Alpha | Apr 15, 2005 | Apr 21, 2005 | May 5, 2005 |
| № 752 | N02 | E15 | 05 | 0090 | Beta | Apr 19, 2005 | Apr 26, 2005 | May 9, 2005 |
| № 750 | S08 | W65 | 01 | 0020 | Alpha | Apr 13, 2005 | Apr 20, 2005 | May 3, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, April. Gray background - average solar cycle.
