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 | S20 | E52 | 01 | 0070 | Alpha | May 12, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9450 | S03 | W36 | 02 | 0020 | Alpha | May 5, 2001 | May 12, 2001 | May 26, 2001 |
| № 9449 | S17 | E17 | 02 | 0080 | Alpha | May 9, 2001 | May 16, 2001 | May 30, 2001 |
| № 9448 | N21 | E07 | 04 | 0100 | Alpha | May 9, 2001 | May 15, 2001 | May 29, 2001 |
| № 9447 | N11 | W71 | 06 | 0200 | Beta | May 3, 2001 | May 9, 2001 | May 23, 2001 |
| № 9445 | N23 | W30 | 34 | 0180 | Beta-Gamma | May 6, 2001 | May 13, 2001 | May 26, 2001 |
| № 9442 | N26 | W69 | 01 | 0050 | Alpha | May 3, 2001 | May 10, 2001 | May 24, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, May. Gray background - average solar cycle.
