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) | |
|---|---|---|---|---|---|---|---|---|
| № 9350 | N18 | E69 | 01 | 0060 | Alpha | Feb 18, 2001 | Feb 25, 2001 | Mar 11, 2001 |
| № 9349 | N28 | E46 | 01 | 0040 | Alpha | Feb 17, 2001 | Feb 24, 2001 | Mar 10, 2001 |
| № 9348 | N11 | W08 | 06 | 0010 | Beta | Feb 12, 2001 | Feb 19, 2001 | Mar 5, 2001 |
| № 9347 | N04 | E38 | 04 | 0050 | Beta | Feb 16, 2001 | Feb 23, 2001 | Mar 8, 2001 |
| № 9345 | S20 | W20 | 06 | 0020 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9341 | S09 | W43 | 03 | 0010 | Beta | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9339 | S08 | W19 | 09 | 0120 | Beta | Feb 12, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9338 | S20 | W28 | 21 | 0210 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9335 | N11 | W43 | 02 | 0000 | Alpha | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9334 | N12 | W55 | 05 | 0040 | Beta | Feb 9, 2001 | Feb 16, 2001 | Mar 1, 2001 |
| № 9330 | N22 | W91 | 01 | 0000 | Alpha | Feb 6, 2001 | Feb 13, 2001 | Feb 27, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, February. Gray background - average solar cycle.
