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) | |
|---|---|---|---|---|---|---|---|---|
| № 9908 | N04 | W40 | 07 | 0060 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9907 | S04 | E46 | 30 | 0440 | Beta-Gamma | Apr 18, 2002 | Apr 25, 2002 | May 9, 2002 |
| № 9906 | S15 | E13 | 38 | 0470 | Beta-Gamma-Delta | Apr 16, 2002 | Apr 23, 2002 | May 6, 2002 |
| № 9905 | S15 | W41 | 06 | 0060 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9904 | S14 | W56 | 08 | 0030 | Beta | Apr 11, 2002 | Apr 18, 2002 | May 1, 2002 |
| № 9902 | N13 | E03 | 07 | 0090 | Beta | Apr 15, 2002 | Apr 22, 2002 | May 6, 2002 |
| № 9901 | N20 | W39 | 20 | 0250 | Beta-Gamma-Delta | Apr 12, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9900 | S29 | W68 | 10 | 0100 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9899 | N18 | W19 | 03 | 0160 | Alpha | Apr 14, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9896 | S10 | W33 | 01 | 0100 | Alpha | Apr 13, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9893 | N18 | W53 | 17 | 0400 | Beta-Gamma-Delta | Apr 11, 2002 | Apr 18, 2002 | May 2, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
