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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 29, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 587 | S13 | E74 | 04 | 0110 | Beta | Apr 5, 2004 | Apr 11, 2004 | Apr 25, 2004 |
| № 585 | S14 | E41 | 07 | 0050 | Beta | Apr 2, 2004 | Apr 9, 2004 | Apr 22, 2004 |
| № 584 | S13 | E09 | 04 | 0030 | Beta | Mar 31, 2004 | Apr 6, 2004 | Apr 20, 2004 |
| № 583 | N08 | W80 | 03 | 0040 | Beta | Mar 24, 2004 | Mar 31, 2004 | Apr 13, 2004 |
| № 582 | N15 | E31 | 23 | 0390 | Beta | Apr 1, 2004 | Apr 8, 2004 | Apr 22, 2004 |
| № 581 | S03 | E25 | 01 | 0140 | Alpha | Apr 1, 2004 | Apr 8, 2004 | Apr 21, 2004 |
| № 578 | N14 | W56 | 02 | 0020 | Alpha | Mar 26, 2004 | Apr 2, 2004 | Apr 15, 2004 |
| № 577 | S03 | W67 | 01 | 0020 | Alpha | Mar 25, 2004 | Apr 1, 2004 | Apr 14, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to March 2004. The gray background is the average SSN index.
