Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 336 | N12 | E77 | 01 | 0100 | Alpha | Apr 25, 2003 | May 1, 2003 | May 15, 2003 |
| № 335 | S22 | E08 | 02 | 0010 | Beta | Apr 19, 2003 | Apr 26, 2003 | May 10, 2003 |
| № 334 | S08 | W22 | 04 | 0060 | Beta | Apr 17, 2003 | Apr 24, 2003 | May 8, 2003 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1974, January to 2003, April. Gray background - average solar cycle.
