Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 17, 2002. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9872 | S31 | W03 | 07 | 0040 | Beta | Mar 18, 2002 | Mar 25, 2002 | Apr 8, 2002 |
| № 9871 | S21 | E33 | 13 | 0280 | Beta | Mar 20, 2002 | Mar 27, 2002 | Apr 10, 2002 |
| № 9870 | S20 | W05 | 02 | 0100 | Alpha | Mar 17, 2002 | Mar 24, 2002 | Apr 7, 2002 |
| № 9868 | N20 | W30 | 04 | 0010 | Beta | Mar 16, 2002 | Mar 22, 2002 | Apr 5, 2002 |
| № 9866 | S09 | W17 | 35 | 0540 | Beta-Gamma-Delta | Mar 17, 2002 | Mar 23, 2002 | Apr 6, 2002 |
| № 9864 | N19 | W45 | 03 | 0050 | Beta | Mar 14, 2002 | Mar 21, 2002 | Apr 4, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to March 2002. The gray background is the average SSN index.
