Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 326 | S13 | E49 | 02 | 0050 | Alpha | Apr 5, 2003 | Apr 12, 2003 | Apr 25, 2003 |
| № 325 | N13 | E40 | 05 | 0320 | Alpha | Apr 4, 2003 | Apr 11, 2003 | Apr 24, 2003 |
| № 324 | S13 | E23 | 11 | 0050 | Beta | Apr 3, 2003 | Apr 10, 2003 | Apr 23, 2003 |
| № 323 | S08 | W15 | 24 | 0230 | Beta-Gamma | Mar 31, 2003 | Apr 7, 2003 | Apr 20, 2003 |
| № 321 | N05 | W03 | 25 | 0210 | Beta | Apr 1, 2003 | Apr 8, 2003 | Apr 21, 2003 |
| № 320 | N06 | W74 | 04 | 0100 | Beta | Mar 26, 2003 | Apr 2, 2003 | Apr 16, 2003 |
| № 319 | N13 | W42 | 11 | 0250 | Beta-Gamma | Mar 29, 2003 | Apr 5, 2003 | Apr 18, 2003 |
| № 318 | S13 | W34 | 14 | 0060 | Beta | Mar 29, 2003 | Apr 5, 2003 | Apr 19, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to March 2003. The gray background is the average SSN index.
