Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 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) | |
|---|---|---|---|---|---|---|---|---|
| № 431 | S13 | E27 | 31 | 0130 | Beta-Gamma | Aug 16, 2003 | Aug 23, 2003 | Sep 6, 2003 |
| № 430 | S08 | W82 | 03 | 0050 | Beta | Aug 8, 2003 | Aug 15, 2003 | Aug 28, 2003 |
| № 429 | S24 | W37 | 14 | 0060 | Beta | Aug 11, 2003 | Aug 18, 2003 | Sep 1, 2003 |
| № 425 | S09 | W74 | 03 | 0070 | Beta | Aug 9, 2003 | Aug 15, 2003 | Aug 29, 2003 |
| № 424 | S18 | W70 | 13 | 0330 | Beta-Gamma | Aug 9, 2003 | Aug 16, 2003 | Aug 29, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to August 2003. The gray background is the average SSN index.
