Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 457 | S11 | W27 | 06 | 0040 | Beta | Sep 12, 2003 | Sep 19, 2003 | Oct 2, 2003 |
| № 456 | S07 | W45 | 32 | 0190 | Beta | Sep 11, 2003 | Sep 17, 2003 | Oct 1, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to September 2003. The gray background is the average SSN index.
