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) | |
|---|---|---|---|---|---|---|---|---|
| № 664 | S10 | E27 | 19 | 0090 | Beta | Aug 25, 2004 | Sep 1, 2004 | Sep 14, 2004 |
| № 663 | N11 | E54 | 09 | 0200 | Beta | Aug 27, 2004 | Sep 3, 2004 | Sep 16, 2004 |
| № 662 | N13 | W11 | 11 | 0110 | Beta | Aug 22, 2004 | Aug 29, 2004 | Sep 11, 2004 |
| № 661 | N07 | W31 | 09 | 0450 | Beta | Aug 21, 2004 | Aug 27, 2004 | Sep 10, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, August. Gray background - average solar cycle.
