Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 29, 2004. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 568 | S16 | W20 | 04 | 0020 | Beta | Feb 28, 2004 | Mar 6, 2004 | Mar 20, 2004 |
| № 567 | S13 | E37 | 09 | 0070 | Beta | Mar 4, 2004 | Mar 11, 2004 | Mar 24, 2004 |
| № 565 | S04 | W33 | 11 | 0180 | Beta | Feb 28, 2004 | Mar 5, 2004 | Mar 19, 2004 |
| № 564 | N15 | W54 | 28 | 0780 | Beta-Gamma | Feb 26, 2004 | Mar 4, 2004 | Mar 17, 2004 |
| № 563 | S23 | W39 | 02 | 0020 | Beta | Feb 27, 2004 | Mar 5, 2004 | Mar 19, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to February 2004. The gray background is the average SSN index.
