Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 12, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9377 | S18 | E03 | 01 | 0000 | Alpha | Mar 13, 2001 | Mar 20, 2001 | Apr 3, 2001 |
| № 9376 | S13 | E74 | 01 | 0030 | Alpha | Mar 18, 2001 | Mar 25, 2001 | Apr 8, 2001 |
| № 9375 | S16 | W56 | 03 | 0010 | Beta | Mar 9, 2001 | Mar 15, 2001 | Mar 29, 2001 |
| № 9374 | S18 | E40 | 01 | 0000 | Alpha | Mar 16, 2001 | Mar 23, 2001 | Apr 5, 2001 |
| № 9373 | S08 | E50 | 19 | 0230 | Beta | Mar 17, 2001 | Mar 23, 2001 | Apr 6, 2001 |
| № 9372 | S36 | W74 | 07 | 0110 | Beta | Mar 7, 2001 | Mar 14, 2001 | Mar 29, 2001 |
| № 9370 | N10 | W49 | 20 | 0150 | Beta | Mar 9, 2001 | Mar 16, 2001 | Mar 30, 2001 |
| № 9368 | N25 | W71 | 07 | 0210 | Beta | 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.
