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) | |
|---|---|---|---|---|---|---|---|---|
| № 658 | S06 | E51 | 01 | 0020 | Alpha | Aug 13, 2004 | Aug 20, 2004 | Sep 2, 2004 |
| № 657 | N11 | E66 | 01 | 0060 | Alpha | Aug 14, 2004 | Aug 21, 2004 | Sep 3, 2004 |
| № 656 | S13 | E59 | 07 | 0250 | Beta | Aug 13, 2004 | Aug 20, 2004 | Sep 3, 2004 |
| № 655 | S10 | W37 | 22 | 0230 | Beta | Aug 6, 2004 | Aug 13, 2004 | Aug 27, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, August. Gray background - average solar cycle.
