Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 7, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 553 | S05 | W10 | 05 | 0010 | Beta | Feb 7, 2004 | Feb 14, 2004 | Feb 27, 2004 |
| № 552 | S08 | W31 | 01 | 0010 | Alpha | Feb 6, 2004 | Feb 12, 2004 | Feb 26, 2004 |
| № 551 | S06 | E15 | 21 | 0260 | Beta-Gamma | Feb 9, 2004 | Feb 16, 2004 | Feb 29, 2004 |
| № 549 | N14 | W07 | 20 | 0070 | Beta | Feb 7, 2004 | Feb 14, 2004 | Feb 28, 2004 |
| № 547 | S08 | W81 | 01 | 0030 | Alpha | Feb 2, 2004 | Feb 9, 2004 | Feb 22, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to February 2004. The gray background is the average SSN index.
