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) | |
|---|---|---|---|---|---|---|---|---|
| № 9909 | N06 | E70 | 01 | 0130 | Alpha | Apr 21, 2002 | Apr 28, 2002 | May 12, 2002 |
| № 9908 | N05 | W54 | 07 | 0020 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9907 | S04 | E33 | 25 | 0330 | Beta | Apr 18, 2002 | Apr 25, 2002 | May 9, 2002 |
| № 9906 | S15 | W02 | 32 | 0640 | Beta-Gamma-Delta | Apr 16, 2002 | Apr 23, 2002 | May 6, 2002 |
| № 9905 | S14 | W55 | 04 | 0060 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9903 | N15 | W02 | 01 | 0000 | Alpha | Apr 16, 2002 | Apr 23, 2002 | May 6, 2002 |
| № 9902 | N13 | W11 | 11 | 0090 | Beta | Apr 15, 2002 | Apr 22, 2002 | May 6, 2002 |
| № 9901 | N22 | W56 | 14 | 0180 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9900 | S28 | W81 | 03 | 0040 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9899 | N19 | W32 | 04 | 0190 | Beta | Apr 14, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9896 | S09 | W46 | 01 | 0090 | Alpha | Apr 13, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9893 | N20 | W67 | 13 | 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.
