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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 20, 2004. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 578 | N15 | E60 | 11 | 0080 | Beta | Mar 26, 2004 | Apr 1, 2004 | Apr 15, 2004 |
| № 577 | S01 | E52 | 01 | 0070 | Alpha | Mar 25, 2004 | Apr 1, 2004 | Apr 14, 2004 |
| № 576 | S18 | W65 | 06 | 0050 | Beta | Mar 16, 2004 | Mar 23, 2004 | Apr 6, 2004 |
| № 574 | S04 | E28 | 20 | 0140 | Beta-Gamma | Mar 23, 2004 | Mar 30, 2004 | Apr 12, 2004 |
| № 573 | S12 | W22 | 01 | 0010 | Alpha | Mar 19, 2004 | Mar 26, 2004 | Apr 9, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to March 2004. The gray background is the average SSN index.
