Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 571 | S14 | W16 | 02 | 0010 | Beta | Mar 11, 2004 | Mar 18, 2004 | Mar 31, 2004 |
| № 570 | S14 | E17 | 21 | 0730 | Beta-Gamma | Mar 14, 2004 | Mar 20, 2004 | Apr 3, 2004 |
| № 569 | S12 | W57 | 03 | 0030 | Beta | Mar 8, 2004 | Mar 15, 2004 | Mar 28, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to March 2004. The gray background is the average SSN index.
