Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 579 | S11 | E48 | 01 | 0020 | Alpha | Mar 28, 2004 | Apr 3, 2004 | Apr 17, 2004 |
| № 578 | N16 | E20 | 21 | 0120 | Beta | Mar 26, 2004 | Apr 1, 2004 | Apr 15, 2004 |
| № 577 | N00 | E13 | 01 | 0040 | Alpha | Mar 25, 2004 | Apr 1, 2004 | Apr 14, 2004 |
| № 574 | S03 | W13 | 24 | 0080 | Beta | Mar 23, 2004 | Mar 30, 2004 | Apr 12, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, March. Gray background - average solar cycle.
