Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 604 | S19 | E52 | 01 | 0030 | Alpha | May 9, 2004 | May 16, 2004 | May 30, 2004 |
| № 603 | S16 | W63 | 05 | 0040 | Beta | Apr 30, 2004 | May 7, 2004 | May 21, 2004 |
| № 601 | S10 | W61 | 14 | 0200 | Beta | Apr 30, 2004 | May 7, 2004 | May 21, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to May 2004. The gray background is the average SSN index.
