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) | |
|---|---|---|---|---|---|---|---|---|
| № 661 | N07 | E61 | 02 | 0340 | Beta | Aug 21, 2004 | Aug 27, 2004 | Sep 10, 2004 |
| № 660 | S07 | E18 | 01 | 0030 | Alpha | Aug 17, 2004 | Aug 24, 2004 | Sep 7, 2004 |
| № 657 | N10 | W27 | 02 | 0020 | Alpha | Aug 14, 2004 | Aug 21, 2004 | Sep 3, 2004 |
| № 656 | S13 | W34 | 66 | 1300 | Beta-Gamma-Delta | Aug 13, 2004 | Aug 20, 2004 | Sep 3, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, August. Gray background - average solar cycle.
