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) | |
|---|---|---|---|---|---|---|---|---|
| № 547 | S09 | E14 | 04 | 0030 | beta | Feb 1, 2004 | Feb 8, 2004 | Feb 21, 2004 |
| № 546 | S11 | E55 | 03 | 0050 | beta | Feb 4, 2004 | Feb 11, 2004 | Feb 25, 2004 |
| № 545 | S20 | W32 | 05 | 0040 | beta | Jan 29, 2004 | Feb 4, 2004 | Feb 18, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, January. Gray background - average solar cycle.
