Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 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) | |
|---|---|---|---|---|---|---|---|---|
| № 546 | S12 | E81 | 01 | 0050 | Alpha | Feb 5, 2004 | Feb 12, 2004 | Feb 26, 2004 |
| № 545 | S20 | W06 | 04 | 0020 | Beta | Jan 30, 2004 | Feb 5, 2004 | Feb 19, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to January 2004. The gray background is the average SSN index.
