Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 4, 2006. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 867 | S16 | E03 | 12 | 0100 | Beta-Gamma | Apr 5, 2006 | Apr 12, 2006 | Apr 26, 2006 |
| № 866 | S06 | E05 | 06 | 0120 | Beta | Apr 5, 2006 | Apr 12, 2006 | Apr 26, 2006 |
| № 865 | S11 | W21 | 31 | 0330 | Beta-Gamma-Delta | Apr 3, 2006 | Apr 10, 2006 | Apr 24, 2006 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1977 to April 2006. The gray background is the average SSN index.
