Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 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) | |
|---|---|---|---|---|---|---|---|---|
| № 479 | N23 | E36 | 01 | 0020 | Alpha | Oct 17, 2003 | Oct 24, 2003 | Nov 7, 2003 |
| № 477 | S15 | W12 | 03 | 0040 | Beta | Oct 13, 2003 | Oct 20, 2003 | Nov 3, 2003 |
| № 471 | S08 | W89 | 01 | 0070 | Alpha | Oct 8, 2003 | Oct 14, 2003 | Oct 28, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to October 2003. The gray background is the average SSN index.
