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) | |
|---|---|---|---|---|---|---|---|---|
| № 9345 | S20 | E19 | 02 | 0000 | Alpha | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9344 | N31 | E13 | 03 | 0020 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9341 | S09 | W03 | 03 | 0010 | Beta | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9340 | S11 | W36 | 02 | 0000 | Alpha | Feb 7, 2001 | Feb 14, 2001 | Feb 28, 2001 |
| № 9339 | S11 | E21 | 13 | 0210 | Beta | Feb 12, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9338 | S18 | E10 | 06 | 0020 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 3, 2001 |
| № 9337 | S28 | E12 | 05 | 0020 | Beta | Feb 11, 2001 | Feb 18, 2001 | Mar 4, 2001 |
| № 9335 | N09 | E01 | 11 | 0070 | Beta | Feb 10, 2001 | Feb 17, 2001 | Mar 2, 2001 |
| № 9334 | N12 | W14 | 16 | 0110 | Beta | Feb 9, 2001 | Feb 16, 2001 | Mar 1, 2001 |
| № 9330 | N26 | W47 | 07 | 0080 | Beta | 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.
