Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 653 | S12 | E07 | 10 | 0130 | Beta | Jul 24, 2004 | Jul 31, 2004 | Aug 14, 2004 |
| № 652 | N08 | E08 | 56 | 1730 | Beta-Gamma-Delta | Jul 24, 2004 | Jul 31, 2004 | Aug 14, 2004 |
| № 649 | S11 | W54 | 10 | 0150 | Beta-Gamma | Jul 20, 2004 | Jul 27, 2004 | Aug 9, 2004 |
| № 644 | N11 | W86 | 01 | 0060 | Alpha | Jul 17, 2004 | Jul 24, 2004 | Aug 7, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to July 2004. The gray background is the average SSN index.
