Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 4, 2008. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 988 | S06 | W78 | 04 | 0070 | Alpha | Mar 30, 2008 | Apr 6, 2008 | Apr 19, 2008 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1979 to April 2008. The gray background is the average SSN index.
