Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9375 | S16 | W46 | 04 | 0030 | Beta | Mar 9, 2001 | Mar 15, 2001 | Mar 29, 2001 |
| № 9374 | S19 | E50 | 01 | 0010 | Alpha | Mar 16, 2001 | Mar 23, 2001 | Apr 5, 2001 |
| № 9373 | S07 | E61 | 09 | 0190 | Beta | Mar 17, 2001 | Mar 23, 2001 | Apr 6, 2001 |
| № 9372 | S36 | W64 | 10 | 0100 | Beta | Mar 7, 2001 | Mar 14, 2001 | Mar 29, 2001 |
| № 9370 | N10 | W38 | 31 | 0150 | Beta | Mar 9, 2001 | Mar 16, 2001 | Mar 30, 2001 |
| № 9368 | N24 | W59 | 16 | 0340 | Beta-Gamma | Mar 7, 2001 | Mar 14, 2001 | Mar 28, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to March 2001. The gray background is the average SSN index.
