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) | |
|---|---|---|---|---|---|---|---|---|
| № 659 | N17 | E61 | 05 | 0030 | Beta | Aug 16, 2004 | Aug 23, 2004 | Sep 6, 2004 |
| № 657 | N11 | E27 | 01 | 0030 | Alpha | Aug 14, 2004 | Aug 21, 2004 | Sep 3, 2004 |
| № 656 | S12 | E20 | 43 | 0700 | Beta-Gamma-Delta | Aug 13, 2004 | Aug 20, 2004 | Sep 3, 2004 |
| № 655 | S10 | W81 | 04 | 0100 | Beta | Aug 6, 2004 | Aug 13, 2004 | Aug 26, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, August. Gray background - average solar cycle.
