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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 311 | S12 | E05 | 12 | 0100 | Beta | Mar 14, 2003 | Mar 21, 2003 | Apr 4, 2003 |
| № 308 | N10 | E21 | 01 | 0010 | Alpha | Mar 16, 2003 | Mar 22, 2003 | Apr 5, 2003 |
| № 306 | N06 | E08 | 08 | 0590 | Beta | Mar 15, 2003 | Mar 21, 2003 | Apr 4, 2003 |
| № 304 | S13 | W86 | 06 | 0020 | Alpha | Mar 7, 2003 | Mar 14, 2003 | Mar 28, 2003 |
| № 300 | N16 | W51 | 09 | 0040 | Beta | Mar 10, 2003 | Mar 17, 2003 | Mar 31, 2003 |
| № 297 | S11 | W80 | 02 | 0010 | Beta | Mar 8, 2003 | Mar 15, 2003 | Mar 28, 2003 |
| № 296 | N12 | W85 | 01 | 0220 | Alpha | Mar 8, 2003 | Mar 14, 2003 | Mar 28, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to March 2003. The gray background is the average SSN index.
