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) | |
|---|---|---|---|---|---|---|---|---|
| № 599 | N16 | W25 | 04 | 0080 | Beta | Apr 29, 2004 | May 6, 2004 | May 20, 2004 |
| № 596 | S07 | W91 | 01 | 0120 | Alpha | Apr 24, 2004 | May 1, 2004 | May 14, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, April. Gray background - average solar cycle.
