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) | |
|---|---|---|---|---|---|---|---|---|
| № 563 | S21 | E66 | 01 | 0030 | alpha | Feb 26, 2004 | Mar 4, 2004 | Mar 18, 2004 |
| № 562 | S11 | E59 | 02 | 0060 | beta | Feb 25, 2004 | Mar 3, 2004 | Mar 17, 2004 |
| № 561 | N02 | W01 | 01 | 0010 | alpha | Feb 21, 2004 | Feb 28, 2004 | Mar 12, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, February. Gray background - average solar cycle.
