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) | |
|---|---|---|---|---|---|---|---|---|
| № 541 | S10 | W44 | 03 | 0010 | Beta | Jan 17, 2004 | Jan 23, 2004 | Feb 6, 2004 |
| № 540 | S14 | E02 | 36 | 0330 | Beta | Jan 20, 2004 | Jan 27, 2004 | Feb 10, 2004 |
| № 537 | N04 | W83 | 03 | 0050 | Beta | Jan 14, 2004 | Jan 21, 2004 | Feb 3, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, January. Gray background - average solar cycle.
