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) | |
|---|---|---|---|---|---|---|---|---|
| № 677 | N02 | W19 | 02 | 0010 | Alpha | Oct 2, 2004 | Oct 9, 2004 | Oct 23, 2004 |
| № 676 | S12 | E27 | 01 | 0040 | Alpha | Oct 6, 2004 | Oct 13, 2004 | Oct 26, 2004 |
| № 675 | S09 | W17 | 02 | 0090 | Alpha | Oct 3, 2004 | Oct 9, 2004 | Oct 23, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, October. Gray background - average solar cycle.
