Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9539 | S18 | E23 | 05 | 0030 | Beta | Jul 16, 2001 | Jul 23, 2001 | Aug 6, 2001 |
| № 9538 | N18 | E65 | 01 | 0140 | Alpha | Jul 19, 2001 | Jul 26, 2001 | Aug 9, 2001 |
| № 9537 | S06 | E22 | 10 | 0060 | Beta | Jul 16, 2001 | Jul 23, 2001 | Aug 5, 2001 |
| № 9536 | N12 | E20 | 05 | 0020 | Beta | Jul 16, 2001 | Jul 23, 2001 | Aug 5, 2001 |
| № 9535 | N08 | E45 | 01 | 0120 | Alpha | Jul 18, 2001 | Jul 24, 2001 | Aug 7, 2001 |
| № 9533 | S09 | W15 | 07 | 0030 | Beta | Jul 13, 2001 | Jul 20, 2001 | Aug 2, 2001 |
| № 9531 | S06 | W36 | 07 | 0060 | Beta | Jul 12, 2001 | Jul 18, 2001 | Aug 1, 2001 |
| № 9529 | N07 | W51 | 03 | 0050 | Alpha | Jul 10, 2001 | Jul 17, 2001 | Jul 31, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to July 2001. The gray background is the average SSN index.
