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) | |
|---|---|---|---|---|---|---|---|---|
| № 9361 | S16 | W18 | 01 | 0010 | Alpha | Feb 25, 2001 | Mar 3, 2001 | Mar 17, 2001 |
| № 9360 | S10 | E17 | 01 | 0020 | Alpha | Feb 27, 2001 | Mar 6, 2001 | Mar 20, 2001 |
| № 9359 | N13 | E23 | 16 | 0240 | Beta | Feb 28, 2001 | Mar 7, 2001 | Mar 20, 2001 |
| № 9358 | S07 | W34 | 01 | 0010 | Alpha | Feb 23, 2001 | Mar 2, 2001 | Mar 16, 2001 |
| № 9357 | S25 | W46 | 05 | 0020 | Beta | Feb 22, 2001 | Mar 1, 2001 | Mar 15, 2001 |
| № 9354 | S09 | W72 | 15 | 0280 | Beta | Feb 21, 2001 | Feb 27, 2001 | Mar 13, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, February. Gray background - average solar cycle.
