Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9464 | S11 | E70 | 03 | 0070 | Beta | May 26, 2001 | Jun 2, 2001 | Jun 16, 2001 |
| № 9463 | N07 | E59 | 06 | 0230 | Beta | May 25, 2001 | Jun 1, 2001 | Jun 15, 2001 |
| № 9462 | N19 | E48 | 01 | 0050 | Alpha | May 25, 2001 | Jun 1, 2001 | Jun 14, 2001 |
| № 9461 | N19 | E25 | 15 | 0170 | Beta | May 23, 2001 | May 30, 2001 | Jun 13, 2001 |
| № 9455 | S17 | W91 | 02 | 0060 | Beta | May 14, 2001 | May 21, 2001 | Jun 4, 2001 |
| № 9454 | N14 | W47 | 05 | 0040 | Beta | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
