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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 315 | N02 | W86 | 02 | 0010 | Alpha | Mar 12, 2003 | Mar 18, 2003 | Apr 1, 2003 |
| № 314 | S14 | W26 | 31 | 0380 | Beta-Gamma-Delta | Mar 16, 2003 | Mar 23, 2003 | Apr 5, 2003 |
| № 313 | N33 | W38 | 05 | 0050 | Beta | Mar 15, 2003 | Mar 22, 2003 | Apr 5, 2003 |
| № 311 | S10 | W50 | 07 | 0050 | Beta | Mar 14, 2003 | Mar 21, 2003 | Apr 4, 2003 |
| № 308 | N11 | W33 | 04 | 0020 | Beta | Mar 16, 2003 | Mar 22, 2003 | Apr 5, 2003 |
| № 306 | N08 | W45 | 12 | 0630 | Beta-Gamma | Mar 15, 2003 | Mar 21, 2003 | Apr 4, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to March 2003. The gray background is the average SSN index.
