Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 21, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 744 | S12 | E01 | 07 | 0060 | Beta | Mar 22, 2005 | Mar 29, 2005 | Apr 11, 2005 |
| № 743 | S08 | W70 | 12 | 0310 | Beta-Gamma | Mar 17, 2005 | Mar 24, 2005 | Apr 6, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to March 2005. The gray background is the average SSN index.
