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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 31, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1183 | N15 | E29 | 20 | 0330 | Beta | Apr 3, 2011 | Apr 10, 2011 | Apr 24, 2011 |
| № 1181 | S26 | E08 | 01 | 0010 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
| № 1180 | N23 | E01 | 01 | 0030 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
| № 1178 | S17 | W08 | 04 | 0010 | Beta | Mar 31, 2011 | Apr 7, 2011 | Apr 21, 2011 |
| № 1176 | S17 | W35 | 15 | 0220 | Beta | Mar 29, 2011 | Apr 5, 2011 | Apr 19, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to March 2011. The gray background is the average SSN index.
