Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 15, 2003. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 522 | N16 | W61 | 04 | 0030 | Beta | Dec 11, 2003 | Dec 18, 2003 | Jan 1, 2004 |
| № 521 | S12 | E23 | 04 | 0050 | Beta | Dec 18, 2003 | Dec 24, 2003 | Jan 7, 2004 |
| № 520 | N02 | E21 | 10 | 0140 | Beta | Dec 17, 2003 | Dec 24, 2003 | Jan 7, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to December 2003. The gray background is the average SSN index.
