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) | |
|---|---|---|---|---|---|---|---|---|
| № 581 | S03 | E81 | 01 | 0060 | Alpha | Apr 1, 2004 | Apr 8, 2004 | Apr 21, 2004 |
| № 580 | S07 | W07 | 03 | 0010 | Alpha | Mar 25, 2004 | Apr 1, 2004 | Apr 15, 2004 |
| № 578 | N15 | W07 | 27 | 0190 | Beta | Mar 25, 2004 | Apr 1, 2004 | Apr 15, 2004 |
| № 577 | S01 | W14 | 04 | 0060 | Beta | Mar 25, 2004 | Apr 1, 2004 | Apr 14, 2004 |
| № 574 | S04 | W40 | 24 | 0130 | 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.
