Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9392 | N19 | W29 | 07 | 0030 | Beta | Mar 22, 2001 | Mar 29, 2001 | Apr 11, 2001 |
| № 9390 | N15 | E46 | 16 | 0300 | Beta | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9389 | S13 | E54 | 08 | 0180 | Beta | Mar 28, 2001 | Apr 4, 2001 | Apr 18, 2001 |
| № 9388 | N14 | W75 | 04 | 0030 | Beta | Mar 18, 2001 | Mar 25, 2001 | Apr 8, 2001 |
| № 9387 | N08 | E21 | 18 | 0140 | Beta | Mar 26, 2001 | Apr 1, 2001 | Apr 15, 2001 |
| № 9376 | S14 | W73 | 02 | 0030 | Beta | Mar 18, 2001 | Mar 25, 2001 | Apr 8, 2001 |
| № 9373 | S05 | W92 | 04 | 0060 | Alpha | Mar 17, 2001 | Mar 24, 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.
