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) | |
|---|---|---|---|---|---|---|---|---|
| № 9904 | S16 | W07 | 07 | 0060 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9903 | N19 | E61 | 04 | 0050 | Beta | Apr 16, 2002 | Apr 23, 2002 | May 6, 2002 |
| № 9902 | N13 | E54 | 04 | 0120 | Beta | Apr 15, 2002 | Apr 22, 2002 | May 6, 2002 |
| № 9901 | N19 | E11 | 11 | 0200 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9900 | S29 | W19 | 20 | 0180 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9899 | N18 | E33 | 06 | 0190 | Beta | Apr 14, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9898 | S19 | E25 | 04 | 0010 | Beta | Apr 13, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9897 | S02 | W43 | 02 | 0020 | Beta | Apr 8, 2002 | Apr 15, 2002 | Apr 28, 2002 |
| № 9896 | S11 | E21 | 02 | 0100 | Alpha | Apr 13, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9893 | N19 | W00 | 25 | 0490 | Beta-Gamma-Delta | Apr 11, 2002 | Apr 18, 2002 | May 2, 2002 |
| № 9888 | S11 | W72 | 02 | 0040 | Beta | Apr 6, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N04 | W82 | 05 | 0250 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
