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) | |
|---|---|---|---|---|---|---|---|---|
| № 540 | S11 | E68 | 07 | 0500 | Beta | Jan 20, 2004 | Jan 27, 2004 | Feb 10, 2004 |
| № 537 | N05 | W16 | 10 | 0190 | Beta-Gamma-Delta | Jan 14, 2004 | Jan 21, 2004 | Feb 3, 2004 |
| № 536 | S12 | W81 | 06 | 0240 | Beta-Gamma | Jan 9, 2004 | Jan 16, 2004 | Jan 29, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, January. Gray background - average solar cycle.
