Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9873 | S17 | W07 | 17 | 0120 | Beta | Mar 18, 2002 | Mar 25, 2002 | Apr 8, 2002 |
| № 9872 | S32 | W16 | 04 | 0030 | Beta | Mar 18, 2002 | Mar 25, 2002 | Apr 8, 2002 |
| № 9871 | S18 | E22 | 15 | 0330 | Beta | Mar 21, 2002 | Mar 27, 2002 | Apr 10, 2002 |
| № 9870 | S20 | W18 | 01 | 0120 | Alpha | Mar 17, 2002 | Mar 24, 2002 | Apr 7, 2002 |
| № 9866 | S09 | W31 | 24 | 0470 | Beta-Gamma-Delta | Mar 17, 2002 | Mar 23, 2002 | Apr 6, 2002 |
| № 9864 | N17 | W60 | 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.
