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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 349 | S14 | E62 | 02 | 0030 | Alpha | May 3, 2003 | May 9, 2003 | May 23, 2003 |
| № 348 | S36 | E60 | 04 | 0020 | Beta | May 3, 2003 | May 10, 2003 | May 24, 2003 |
| № 347 | S20 | E38 | 04 | 0040 | Beta | May 1, 2003 | May 8, 2003 | May 21, 2003 |
| № 346 | N16 | E50 | 03 | 0060 | Beta | May 2, 2003 | May 8, 2003 | May 22, 2003 |
| № 345 | S17 | E50 | 06 | 0170 | Beta | May 2, 2003 | May 9, 2003 | May 22, 2003 |
| № 344 | N16 | E15 | 20 | 0400 | Beta-Gamma-Delta | Apr 29, 2003 | May 6, 2003 | May 20, 2003 |
| № 343 | N06 | E21 | 01 | 0020 | Alpha | Apr 29, 2003 | May 6, 2003 | May 20, 2003 |
| № 342 | N17 | W59 | 05 | 0050 | Beta | Apr 23, 2003 | Apr 30, 2003 | May 14, 2003 |
| № 338 | N18 | W69 | 19 | 0250 | Beta-Gamma-Delta | Apr 23, 2003 | Apr 29, 2003 | May 13, 2003 |
| № 337 | S14 | W24 | 13 | 0220 | Beta | Apr 26, 2003 | May 3, 2003 | May 16, 2003 |
| № 336 | N14 | W40 | 06 | 0010 | Beta | Apr 25, 2003 | May 2, 2003 | May 15, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to April 2003. The gray background is the average SSN index.
