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) | |
|---|---|---|---|---|---|---|---|---|
| № 9161 | N05 | E53 | 02 | 0010 | BETA | Sep 17, 2000 | Sep 24, 2000 | Oct 7, 2000 |
| № 9154 | S17 | W90 | 05 | 0120 | BETA | Sep 6, 2000 | Sep 13, 2000 | Sep 27, 2000 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1971, January to 2000, September. Gray background - average solar cycle.
