Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 12, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 334 | S08 | E53 | 04 | 0120 | Beta | Apr 17, 2003 | Apr 24, 2003 | May 7, 2003 |
| № 332 | N10 | E02 | 02 | 0000 | Alpha | Apr 13, 2003 | Apr 20, 2003 | May 4, 2003 |
| № 330 | N07 | W33 | 13 | 0360 | Beta | Apr 11, 2003 | Apr 17, 2003 | May 1, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to April 2003. The gray background is the average SSN index.
