Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 274 | S07 | E47 | 01 | 0090 | Alpha | Feb 4, 2003 | Feb 11, 2003 | Feb 25, 2003 |
| № 273 | N06 | W57 | 10 | 0120 | Beta | Jan 28, 2003 | Feb 3, 2003 | Feb 17, 2003 |
| № 272 | S06 | W30 | 12 | 0060 | Beta | Jan 30, 2003 | Feb 5, 2003 | Feb 19, 2003 |
| № 271 | S06 | W76 | 01 | 0060 | Alpha | Jan 26, 2003 | Feb 2, 2003 | Feb 15, 2003 |
| № 269 | S07 | W43 | 01 | 0060 | Alpha | Jan 29, 2003 | Feb 4, 2003 | Feb 18, 2003 |
| № 267 | S17 | W50 | 09 | 0020 | Beta | Jan 28, 2003 | Feb 4, 2003 | Feb 18, 2003 |
| № 266 | S21 | W81 | 01 | 0060 | Alpha | Jan 26, 2003 | Feb 2, 2003 | Feb 15, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to January 2003. The gray background is the average SSN index.
