Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 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) | |
|---|---|---|---|---|---|---|---|---|
| № 640 | S09 | W11 | 07 | 0030 | Beta | Jul 4, 2004 | Jul 11, 2004 | Jul 24, 2004 |
| № 639 | N08 | W08 | 04 | 0060 | Alpha | Jul 4, 2004 | Jul 11, 2004 | Jul 25, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to July 2004. The gray background is the average SSN index.
