Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9387 | N09 | E61 | 03 | 0030 | Beta | Mar 25, 2001 | Apr 1, 2001 | Apr 15, 2001 |
| № 9386 | N04 | W25 | 01 | 0010 | Alpha | Mar 19, 2001 | Mar 26, 2001 | Apr 8, 2001 |
| № 9384 | N13 | W60 | 08 | 0100 | Beta | Mar 16, 2001 | Mar 23, 2001 | Apr 6, 2001 |
| № 9380 | S12 | W27 | 02 | 0010 | Beta | Mar 19, 2001 | Mar 26, 2001 | Apr 8, 2001 |
| № 9373 | S07 | W56 | 21 | 0270 | Beta-Gamma | Mar 17, 2001 | Mar 23, 2001 | Apr 6, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to March 2001. The gray background is the average SSN index.
