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) | |
|---|---|---|---|---|---|---|---|---|
| № 9451 | S22 | E65 | 01 | 0160 | Alpha | May 12, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9450 | S03 | W20 | 06 | 0060 | Beta | May 5, 2001 | May 12, 2001 | May 26, 2001 |
| № 9449 | S17 | E31 | 02 | 0090 | Alpha | May 9, 2001 | May 16, 2001 | May 30, 2001 |
| № 9448 | N21 | E22 | 07 | 0110 | Beta | May 9, 2001 | May 16, 2001 | May 29, 2001 |
| № 9447 | N12 | W55 | 17 | 0260 | Beta-Gamma | May 3, 2001 | May 10, 2001 | May 23, 2001 |
| № 9445 | N24 | W16 | 33 | 0220 | Beta-Gamma | May 6, 2001 | May 13, 2001 | May 27, 2001 |
| № 9442 | N27 | W53 | 01 | 0030 | Alpha | May 3, 2001 | May 10, 2001 | May 24, 2001 |
| № 9441 | N05 | W73 | 04 | 0150 | Beta | May 2, 2001 | May 8, 2001 | May 22, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, May. Gray background - average solar cycle.
