Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 28, 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 | E62 | 08 | 0150 | Beta-Gamma | Apr 3, 2011 | Apr 10, 2011 | Apr 23, 2011 |
| № 1182 | N13 | E01 | 01 | 0000 | Alpha | Mar 29, 2011 | Apr 5, 2011 | Apr 19, 2011 |
| № 1181 | S26 | E45 | 01 | 0020 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
| № 1180 | N24 | E40 | 01 | 0050 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
| № 1179 | N09 | W74 | 01 | 0000 | Alpha | Mar 23, 2011 | Mar 30, 2011 | Apr 13, 2011 |
| № 1178 | S15 | E32 | 08 | 0060 | Beta | Mar 31, 2011 | Apr 7, 2011 | Apr 21, 2011 |
| № 1177 | N19 | W02 | 05 | 0030 | Beta | Mar 29, 2011 | Apr 5, 2011 | Apr 18, 2011 |
| № 1176 | S15 | E02 | 27 | 0400 | Beta-Gamma | 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.
