Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 666 | N16 | E33 | 01 | 0000 | Alpha | Sep 2, 2004 | Sep 9, 2004 | Sep 23, 2004 |
| № 664 | S11 | W83 | 01 | 0060 | Alpha | Aug 25, 2004 | Aug 31, 2004 | Sep 14, 2004 |
| № 663 | N07 | W56 | 04 | 0040 | Beta | Aug 27, 2004 | Sep 2, 2004 | Sep 16, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, August. Gray background - average solar cycle.
