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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 18, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1056 | N17 | E43 | 04 | 0020 | Beta | Mar 23, 2010 | Mar 29, 2010 | Apr 12, 2010 |
| № 1054 | N15 | W41 | 04 | 0070 | Beta | Mar 16, 2010 | Mar 23, 2010 | Apr 6, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to March 2010. The gray background is the average SSN index.
