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) | |
|---|---|---|---|---|---|---|---|---|
| № 9912 | N11 | E30 | 04 | 0050 | Beta | Apr 22, 2002 | Apr 29, 2002 | May 13, 2002 |
| № 9911 | S13 | E25 | 04 | 0020 | Beta | Apr 22, 2002 | Apr 29, 2002 | May 12, 2002 |
| № 9910 | S20 | E09 | 18 | 0210 | Beta | Apr 21, 2002 | Apr 27, 2002 | May 11, 2002 |
| № 9909 | N08 | E17 | 03 | 0100 | Beta | Apr 21, 2002 | Apr 28, 2002 | May 11, 2002 |
| № 9907 | S02 | W20 | 16 | 0070 | Beta | Apr 18, 2002 | Apr 25, 2002 | May 9, 2002 |
| № 9906 | S14 | W53 | 33 | 0770 | Beta-Gamma | Apr 16, 2002 | Apr 23, 2002 | May 6, 2002 |
| № 9902 | N12 | W68 | 01 | 0060 | Alpha | Apr 15, 2002 | Apr 22, 2002 | May 5, 2002 |
| № 9899 | N19 | W84 | 01 | 0100 | Alpha | Apr 13, 2002 | Apr 20, 2002 | May 4, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
