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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 1, 2012. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1451 | N17 | E55 | 04 | 0020 | Beta | Apr 6, 2012 | Apr 13, 2012 | Apr 27, 2012 |
| № 1450 | N15 | E40 | 05 | 0020 | Beta | Apr 5, 2012 | Apr 12, 2012 | Apr 25, 2012 |
| № 1449 | S18 | W45 | 04 | 0030 | Beta | Mar 29, 2012 | Apr 5, 2012 | Apr 19, 2012 |
| № 1448 | S17 | E17 | 03 | 0010 | Beta | Apr 3, 2012 | Apr 10, 2012 | Apr 24, 2012 |
| № 1445 | S23 | W24 | 03 | 0130 | Beta | Mar 31, 2012 | Apr 7, 2012 | Apr 21, 2012 |
| № 1443 | N13 | W58 | 03 | 0030 | Beta | Mar 28, 2012 | Apr 4, 2012 | Apr 18, 2012 |
| № 1442 | N12 | W64 | 04 | 0050 | Beta | Mar 28, 2012 | Apr 4, 2012 | Apr 17, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
