Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 622 | S12 | E72 | 03 | 0080 | Alpha | Jun 6, 2004 | Jun 13, 2004 | Jun 27, 2004 |
| № 621 | S15 | E51 | 14 | 0140 | Beta | Jun 5, 2004 | Jun 12, 2004 | Jun 25, 2004 |
| № 618 | S09 | W72 | 17 | 0360 | Beta-Gamma | May 27, 2004 | Jun 2, 2004 | Jun 16, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to May 2004. The gray background is the average SSN index.
