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) | |
|---|---|---|---|---|---|---|---|---|
| № 9907 | S04 | E74 | 10 | 0200 | Beta | Apr 19, 2002 | Apr 25, 2002 | May 9, 2002 |
| № 9906 | S16 | E40 | 09 | 0080 | Beta | Apr 16, 2002 | Apr 23, 2002 | May 7, 2002 |
| № 9905 | S15 | W13 | 07 | 0040 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9904 | S16 | W36 | 04 | 0020 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9903 | N19 | E34 | 05 | 0040 | Beta | Apr 16, 2002 | Apr 22, 2002 | May 6, 2002 |
| № 9902 | N13 | E31 | 05 | 0080 | Beta | Apr 15, 2002 | Apr 22, 2002 | May 6, 2002 |
| № 9901 | N21 | W14 | 16 | 0190 | Beta-Gamma-Delta | Apr 12, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9900 | S28 | W45 | 13 | 0100 | Beta | Apr 9, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9899 | N18 | E09 | 06 | 0210 | Beta | Apr 14, 2002 | Apr 21, 2002 | May 4, 2002 |
| № 9898 | S18 | W02 | 01 | 0010 | Alpha | Apr 13, 2002 | Apr 20, 2002 | May 3, 2002 |
| № 9897 | S02 | W74 | 01 | 0010 | Alpha | Apr 7, 2002 | Apr 14, 2002 | Apr 28, 2002 |
| № 9896 | S11 | W07 | 01 | 0110 | Alpha | Apr 12, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9893 | N19 | W27 | 27 | 0340 | Beta-Gamma | 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.
