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 | N14 | E52 | 08 | 0120 | Beta | Apr 30, 2004 | May 7, 2004 | May 20, 2004 |
| № 596 | S09 | W20 | 15 | 0240 | Beta | Apr 24, 2004 | May 1, 2004 | May 15, 2004 |
| № 595 | S08 | W37 | 11 | 0010 | Beta | Apr 23, 2004 | Apr 30, 2004 | May 13, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, April. Gray background - average solar cycle.
