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) | |
|---|---|---|---|---|---|---|---|---|
| № 9892 | N05 | E65 | 05 | 0090 | Beta | Apr 9, 2002 | Apr 16, 2002 | Apr 29, 2002 |
| № 9891 | S08 | W06 | 01 | 0000 | Alpha | Apr 3, 2002 | Apr 10, 2002 | Apr 24, 2002 |
| № 9890 | S15 | W47 | 01 | 0000 | Alpha | Mar 31, 2002 | Apr 7, 2002 | Apr 21, 2002 |
| № 9889 | S19 | E20 | 07 | 0020 | Beta | Apr 5, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9888 | S12 | E21 | 24 | 0250 | Beta | Apr 5, 2002 | Apr 12, 2002 | Apr 26, 2002 |
| № 9887 | N02 | E13 | 48 | 0700 | Beta-Gamma | Apr 5, 2002 | Apr 12, 2002 | Apr 25, 2002 |
| № 9886 | N12 | E04 | 32 | 0110 | Beta | Apr 4, 2002 | Apr 11, 2002 | Apr 25, 2002 |
| № 9885 | N13 | W12 | 41 | 0600 | Beta-Gamma | Apr 3, 2002 | Apr 10, 2002 | Apr 23, 2002 |
| № 9884 | S18 | W37 | 13 | 0120 | Beta | Apr 1, 2002 | Apr 8, 2002 | Apr 22, 2002 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1973, January to 2002, April. Gray background - average solar cycle.
