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) | |
|---|---|---|---|---|---|---|---|---|
| № 561 | N02 | E39 | 01 | 0030 | Alpha | Feb 22, 2004 | Feb 29, 2004 | Mar 13, 2004 |
| № 554 | S08 | W56 | 01 | 0050 | Alpha | Feb 15, 2004 | Feb 22, 2004 | Mar 6, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, February. Gray background - average solar cycle.
