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) | |
|---|---|---|---|---|---|---|---|---|
| № 9889 | S20 | E30 | 02 | 0020 | Alpha | Apr 5, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9888 | S13 | E32 | 14 | 0330 | Beta | Apr 5, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N01 | E24 | 25 | 0490 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
| № 9886 | N11 | E16 | 21 | 0180 | Beta | Apr 4, 2002 | Apr 11, 2002 | Apr 25, 2002 |
| № 9885 | N11 | E01 | 33 | 0710 | Beta-Gamma | Apr 3, 2002 | Apr 10, 2002 | Apr 23, 2002 |
| № 9884 | S19 | W25 | 09 | 0120 | Beta | Apr 1, 2002 | Apr 8, 2002 | Apr 22, 2002 |
| № 9878 | N08 | W82 | 02 | 0020 | Alpha | Mar 28, 2002 | Apr 4, 2002 | Apr 17, 2002 |
| № 9876 | S18 | W92 | 03 | 0010 | Alpha | Mar 27, 2002 | Apr 3, 2002 | Apr 17, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
