Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 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) | |
|---|---|---|---|---|---|---|---|---|
| № 655 | S09 | E69 | 01 | 0110 | Alpha | Aug 6, 2004 | Aug 13, 2004 | Aug 27, 2004 |
| № 654 | N08 | W17 | 12 | 0120 | Beta-Gamma | Jul 31, 2004 | Aug 7, 2004 | Aug 20, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to July 2004. The gray background is the average SSN index.
