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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 743 | S08 | W06 | 05 | 0290 | Alpha | Mar 17, 2005 | Mar 23, 2005 | Apr 6, 2005 |
| № 742 | S05 | W41 | 20 | 0330 | Beta-Gamma | Mar 14, 2005 | Mar 21, 2005 | Apr 3, 2005 |
| № 741 | N10 | W82 | 03 | 0100 | Beta | Mar 11, 2005 | Mar 18, 2005 | Mar 31, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to March 2005. The gray background is the average SSN index.
