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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 2, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 536 | S11 | E73 | 01 | 0380 | Alpha | Jan 9, 2004 | Jan 15, 2004 | Jan 29, 2004 |
| № 535 | S19 | W38 | 03 | 0020 | Beta | Dec 31, 2003 | Jan 7, 2004 | Jan 21, 2004 |
| № 534 | S06 | E28 | 13 | 0090 | Beta | Jan 5, 2004 | Jan 12, 2004 | Jan 25, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to January 2004. The gray background is the average SSN index.
