Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9354 | S08 | E20 | 08 | 0050 | Beta | Feb 21, 2001 | Feb 27, 2001 | Mar 13, 2001 |
| № 9353 | S23 | E03 | 06 | 0010 | Beta | Feb 19, 2001 | Feb 26, 2001 | Mar 12, 2001 |
| № 9352 | S22 | E36 | 03 | 0010 | Beta | Feb 22, 2001 | Mar 1, 2001 | Mar 15, 2001 |
| № 9350 | N18 | W09 | 01 | 0080 | Alpha | Feb 18, 2001 | Feb 25, 2001 | Mar 11, 2001 |
| № 9349 | N28 | W31 | 01 | 0010 | Alpha | Feb 17, 2001 | Feb 24, 2001 | Mar 10, 2001 |
| № 9348 | N17 | W83 | 04 | 0050 | Beta | Feb 13, 2001 | Feb 20, 2001 | Mar 5, 2001 |
| № 9347 | N05 | W41 | 02 | 0020 | Alpha | Feb 16, 2001 | Feb 23, 2001 | Mar 8, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, February. Gray background - average solar cycle.
