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 | S11 | W15 | 17 | 0140 | Beta | Aug 25, 2004 | Sep 1, 2004 | Sep 14, 2004 |
| № 663 | N10 | E13 | 05 | 0100 | Beta | Aug 27, 2004 | Sep 3, 2004 | Sep 16, 2004 |
| № 661 | N06 | W72 | 03 | 0320 | 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.
