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) | |
|---|---|---|---|---|---|---|---|---|
| № 9902 | N11 | E75 | 01 | 0120 | Alpha | Apr 15, 2002 | Apr 21, 2002 | May 5, 2002 |
| № 9901 | N20 | E37 | 08 | 0060 | Beta | Apr 12, 2002 | Apr 19, 2002 | May 2, 2002 |
| № 9900 | S29 | E07 | 14 | 0080 | Beta | Apr 10, 2002 | Apr 17, 2002 | May 1, 2002 |
| № 9899 | N18 | E59 | 01 | 0180 | Alpha | Apr 13, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9898 | S18 | E53 | 04 | 0030 | Beta | Apr 13, 2002 | Apr 20, 2002 | May 4, 2002 |
| № 9897 | S02 | W17 | 09 | 0070 | Beta | Apr 8, 2002 | Apr 14, 2002 | Apr 28, 2002 |
| № 9896 | S11 | E47 | 01 | 0080 | Alpha | Apr 13, 2002 | Apr 19, 2002 | May 3, 2002 |
| № 9893 | N18 | E27 | 26 | 0360 | Beta-Gamma | Apr 11, 2002 | Apr 18, 2002 | May 2, 2002 |
| № 9892 | N05 | W06 | 03 | 0010 | Beta | Apr 9, 2002 | Apr 15, 2002 | Apr 29, 2002 |
| № 9888 | S11 | W45 | 05 | 0160 | Alpha | Apr 6, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N02 | W56 | 15 | 0560 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
| № 9886 | N14 | W67 | 06 | 0090 | Beta | Apr 4, 2002 | Apr 11, 2002 | Apr 24, 2002 |
| № 9885 | N13 | W80 | 04 | 0170 | Beta | Apr 3, 2002 | Apr 10, 2002 | Apr 23, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
