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) | |
|---|---|---|---|---|---|---|---|---|
| № 546 | S12 | E68 | 01 | 0050 | Alpha | Feb 5, 2004 | Feb 12, 2004 | Feb 26, 2004 |
| № 545 | S20 | W19 | 04 | 0020 | Beta | Jan 30, 2004 | Feb 5, 2004 | Feb 19, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, January. Gray background - average solar cycle.
