Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 31, 2001. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9482 | S16 | E46 | 04 | 0030 | Beta | Jun 5, 2001 | Jun 11, 2001 | Jun 25, 2001 |
| № 9479 | N18 | W74 | 01 | 0000 | Alpha | May 27, 2001 | Jun 2, 2001 | Jun 16, 2001 |
| № 9475 | N19 | E17 | 15 | 0130 | Beta-Gamma | Jun 2, 2001 | Jun 9, 2001 | Jun 23, 2001 |
| № 9474 | N20 | E00 | 08 | 0030 | Beta | Jun 1, 2001 | Jun 8, 2001 | Jun 22, 2001 |
| № 9472 | N14 | W33 | 01 | 0000 | Alpha | May 30, 2001 | Jun 5, 2001 | Jun 19, 2001 |
| № 9468 | N04 | W60 | 05 | 0120 | Beta | May 28, 2001 | Jun 3, 2001 | Jun 17, 2001 |
| № 9467 | S06 | W68 | 01 | 0050 | Alpha | May 27, 2001 | Jun 3, 2001 | Jun 16, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
