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) | |
|---|---|---|---|---|---|---|---|---|
| № 573 | S12 | E33 | 02 | 0030 | alpha | Mar 18, 2004 | Mar 25, 2004 | Apr 8, 2004 |
| № 572 | N19 | W45 | 08 | 0090 | beta | Mar 13, 2004 | Mar 19, 2004 | Apr 2, 2004 |
| № 570 | S14 | W46 | 09 | 0230 | beta-gamma | Mar 13, 2004 | Mar 19, 2004 | Apr 2, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, March. Gray background - average solar cycle.
