Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 31, 2001. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9562 | N05 | E71 | 02 | 0140 | Beta | Aug 6, 2001 | Aug 13, 2001 | Aug 27, 2001 |
| № 9561 | S13 | E64 | 05 | 0070 | Beta | Aug 6, 2001 | Aug 13, 2001 | Aug 26, 2001 |
| № 9559 | S24 | W22 | 03 | 0010 | Beta | Jul 30, 2001 | Aug 6, 2001 | Aug 20, 2001 |
| № 9557 | S19 | E23 | 14 | 0110 | Beta | Aug 3, 2001 | Aug 10, 2001 | Aug 23, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to July 2001. The gray background is the average SSN index.
