Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 613 | S08 | E48 | 01 | 0080 | Alpha | May 21, 2004 | May 28, 2004 | Jun 10, 2004 |
| № 612 | N10 | W25 | 17 | 0100 | Beta | May 15, 2004 | May 22, 2004 | Jun 5, 2004 |
| № 609 | S03 | W09 | 39 | 0500 | Beta-Gamma | May 17, 2004 | May 23, 2004 | Jun 6, 2004 |
| № 608 | S06 | W17 | 02 | 0010 | Beta | May 16, 2004 | May 23, 2004 | Jun 5, 2004 |
| № 606 | S09 | W30 | 08 | 0130 | Beta | May 15, 2004 | May 22, 2004 | Jun 4, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to May 2004. The gray background is the average SSN index.
