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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 3, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 328 | S12 | W12 | 05 | 0010 | Alpha | Apr 3, 2003 | Apr 10, 2003 | Apr 23, 2003 |
| № 327 | S05 | W37 | 06 | 0030 | Beta | Apr 1, 2003 | Apr 8, 2003 | Apr 21, 2003 |
| № 326 | S11 | E10 | 02 | 0030 | Alpha | Apr 5, 2003 | Apr 11, 2003 | Apr 25, 2003 |
| № 325 | N10 | E06 | 21 | 0360 | Beta | Apr 4, 2003 | Apr 11, 2003 | Apr 25, 2003 |
| № 324 | S12 | W20 | 22 | 0120 | Beta | Apr 2, 2003 | Apr 9, 2003 | Apr 23, 2003 |
| № 323 | S07 | W55 | 26 | 0270 | Beta-Gamma | Mar 31, 2003 | Apr 7, 2003 | Apr 20, 2003 |
| № 321 | N07 | W39 | 14 | 0180 | Beta | Apr 1, 2003 | Apr 8, 2003 | Apr 21, 2003 |
| № 319 | N12 | W87 | 02 | 0120 | Alpha | Mar 28, 2003 | Apr 4, 2003 | Apr 18, 2003 |
| № 318 | S13 | W75 | 01 | 0030 | Alpha | Mar 29, 2003 | Apr 5, 2003 | Apr 19, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to April 2003. The gray background is the average SSN index.
