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 27, 2004 | Apr 2, 2004 | Apr 16, 2004 |
| № 578 | N16 | E20 | 21 | 0120 | beta | Mar 25, 2004 | Mar 31, 2004 | Apr 14, 2004 |
| № 577 | N00 | E13 | 01 | 0040 | alpha | Mar 24, 2004 | Mar 31, 2004 | Apr 13, 2004 |
| № 574 | S03 | W13 | 24 | 0080 | beta | Mar 22, 2004 | Mar 29, 2004 | Apr 11, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, March. Gray background - average solar cycle.
