Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 4, 2017. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2642 | N15 | W17 | 02 | 0010 | Beta | Mar 4, 2017 | Mar 11, 2017 | Mar 24, 2017 |
| № 2641 | N15 | W10 | 03 | 0010 | Beta | Mar 4, 2017 | Mar 11, 2017 | Mar 25, 2017 |
| № 2638 | N16 | W83 | 01 | 0080 | Alpha | Feb 27, 2017 | Mar 6, 2017 | Mar 19, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to March 2017. The gray background is the average SSN index.
