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 | E48 | 02 | 0020 | Beta | Apr 6, 2002 | Apr 13, 2002 | Apr 26, 2002 |
| № 9888 | S13 | E46 | 05 | 0190 | Beta | Apr 5, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N01 | E37 | 11 | 0240 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
| № 9886 | N11 | E30 | 08 | 0100 | Beta | Apr 4, 2002 | Apr 11, 2002 | Apr 25, 2002 |
| № 9885 | N10 | E14 | 19 | 0600 | Beta-Gamma | Apr 3, 2002 | Apr 10, 2002 | Apr 23, 2002 |
| № 9884 | S19 | W11 | 05 | 0100 | Beta | Apr 1, 2002 | Apr 8, 2002 | Apr 22, 2002 |
| № 9878 | N08 | W68 | 02 | 0020 | Beta | Mar 28, 2002 | Apr 4, 2002 | Apr 17, 2002 |
| № 9876 | S14 | W82 | 01 | 0000 | Alpha | Mar 27, 2002 | Apr 3, 2002 | Apr 16, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
