Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9384 | N10 | E04 | 05 | 0010 | Beta | Mar 16, 2001 | Mar 23, 2001 | Apr 6, 2001 |
| № 9383 | S09 | W42 | 05 | 0020 | Beta | Mar 13, 2001 | Mar 19, 2001 | Apr 2, 2001 |
| № 9382 | N09 | W72 | 02 | 0010 | Beta | Mar 10, 2001 | Mar 17, 2001 | Mar 31, 2001 |
| № 9381 | S17 | E26 | 03 | 0020 | Beta | Mar 18, 2001 | Mar 25, 2001 | Apr 7, 2001 |
| № 9380 | S09 | E42 | 01 | 0010 | Alpha | Mar 19, 2001 | Mar 26, 2001 | Apr 8, 2001 |
| № 9376 | S14 | E36 | 04 | 0010 | Beta | Mar 19, 2001 | Mar 25, 2001 | Apr 8, 2001 |
| № 9374 | S17 | E05 | 02 | 0000 | Alpha | Mar 16, 2001 | Mar 23, 2001 | Apr 6, 2001 |
| № 9373 | S08 | E09 | 57 | 0190 | 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.
