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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 25, 2004. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 599 | N14 | E53 | 08 | 0120 | Beta | Apr 30, 2004 | May 7, 2004 | May 20, 2004 |
| № 596 | S09 | W19 | 15 | 0240 | Beta | Apr 24, 2004 | May 1, 2004 | May 15, 2004 |
| № 595 | S08 | W36 | 11 | 0010 | Beta | Apr 23, 2004 | Apr 30, 2004 | May 13, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to April 2004. The gray background is the average SSN index.
