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) | |
|---|---|---|---|---|---|---|---|---|
| № 9455 | S18 | E17 | 12 | 0100 | Beta | May 14, 2001 | May 21, 2001 | Jun 4, 2001 |
| № 9454 | N13 | E58 | 13 | 0430 | Beta | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
| № 9452 | S09 | E14 | 01 | 0010 | Alpha | May 14, 2001 | May 21, 2001 | Jun 3, 2001 |
| № 9451 | S22 | W12 | 07 | 0130 | Beta | May 12, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9449 | S16 | W48 | 02 | 0020 | Beta | May 9, 2001 | May 16, 2001 | May 30, 2001 |
| № 9448 | N21 | W57 | 01 | 0120 | Alpha | May 9, 2001 | May 16, 2001 | May 29, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, May. Gray background - average solar cycle.
