Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9878 | N08 | E77 | 01 | 0060 | Alpha | Mar 28, 2002 | Apr 3, 2002 | Apr 17, 2002 |
| № 9877 | N18 | W27 | 02 | 0030 | Beta | Mar 20, 2002 | Mar 27, 2002 | Apr 9, 2002 |
| № 9876 | S16 | E67 | 03 | 0050 | Beta | Mar 27, 2002 | Apr 3, 2002 | Apr 16, 2002 |
| № 9875 | S18 | E50 | 06 | 0140 | Beta | Mar 26, 2002 | Apr 2, 2002 | Apr 15, 2002 |
| № 9874 | N18 | E10 | 09 | 0030 | Beta | Mar 23, 2002 | Mar 29, 2002 | Apr 12, 2002 |
| № 9873 | S17 | W47 | 05 | 0050 | Beta | Mar 18, 2002 | Mar 25, 2002 | Apr 8, 2002 |
| № 9871 | S19 | W17 | 14 | 0240 | Beta | Mar 21, 2002 | Mar 27, 2002 | Apr 10, 2002 |
| № 9870 | S21 | W59 | 06 | 0080 | Beta | Mar 17, 2002 | Mar 24, 2002 | Apr 7, 2002 |
| № 9866 | S08 | W71 | 05 | 0270 | Beta-Gamma | Mar 17, 2002 | Mar 23, 2002 | Apr 6, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to March 2002. The gray background is the average SSN index.
