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) | |
|---|---|---|---|---|---|---|---|---|
| № 341 | S10 | E76 | 04 | 0010 | Beta | Apr 29, 2003 | May 5, 2003 | May 19, 2003 |
| № 340 | S04 | E57 | 02 | 0010 | Alpha | Apr 27, 2003 | May 4, 2003 | May 17, 2003 |
| № 339 | N16 | W56 | 12 | 0050 | Beta | Apr 19, 2003 | Apr 25, 2003 | May 9, 2003 |
| № 338 | N18 | W03 | 25 | 0050 | Beta-Gamma | Apr 23, 2003 | Apr 29, 2003 | May 13, 2003 |
| № 337 | S13 | E45 | 22 | 0370 | Beta-Delta | Apr 26, 2003 | May 3, 2003 | May 17, 2003 |
| № 336 | N13 | E25 | 05 | 0120 | Beta | Apr 25, 2003 | May 2, 2003 | May 15, 2003 |
| № 335 | S24 | W41 | 03 | 0010 | Beta | Apr 20, 2003 | Apr 27, 2003 | May 11, 2003 |
| № 334 | S07 | W76 | 01 | 0020 | Alpha | Apr 17, 2003 | Apr 24, 2003 | May 7, 2003 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1974, January to 2003, April. Gray background - average solar cycle.
