Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9893 | N18 | E65 | 08 | 0250 | Beta | Apr 11, 2002 | Apr 18, 2002 | May 1, 2002 |
| № 9892 | N09 | E35 | 05 | 0030 | Beta | Apr 9, 2002 | Apr 15, 2002 | Apr 29, 2002 |
| № 9889 | S20 | W05 | 02 | 0000 | Beta | Apr 6, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9888 | S12 | W05 | 11 | 0180 | Beta | Apr 6, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N02 | W15 | 26 | 0720 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
| № 9886 | N13 | W23 | 16 | 0100 | Beta | Apr 4, 2002 | Apr 11, 2002 | Apr 25, 2002 |
| № 9885 | N13 | W38 | 27 | 0510 | Beta-Gamma | Apr 3, 2002 | Apr 10, 2002 | Apr 23, 2002 |
| № 9884 | S17 | W66 | 01 | 0030 | Alpha | Apr 1, 2002 | Apr 8, 2002 | Apr 21, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
