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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 2, 1999. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8615 | S29 | E79 | 01 | 0040 | ALPHA | Jul 9, 1999 | Jul 16, 1999 | Jul 30, 1999 |
| № 8614 | N19 | E74 | 01 | 0010 | ALPHA | Jul 9, 1999 | Jul 15, 1999 | Jul 29, 1999 |
| № 8613 | N18 | E57 | 03 | 0050 | BETA | Jul 7, 1999 | Jul 14, 1999 | Jul 28, 1999 |
| № 8611 | S25 | E09 | 37 | 0340 | BETA-GAMMA | Jul 4, 1999 | Jul 11, 1999 | Jul 24, 1999 |
| № 8610 | N11 | W37 | 03 | 0020 | ALPHA | Jun 30, 1999 | Jul 7, 1999 | Jul 20, 1999 |
| № 8606 | N16 | W58 | 09 | 0060 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8603 | S14 | W23 | 33 | 0170 | BETA-GAMMA | Jul 1, 1999 | Jul 8, 1999 | Jul 22, 1999 |
| № 8602 | N18 | W32 | 14 | 0260 | BETA | Jun 30, 1999 | Jul 7, 1999 | Jul 21, 1999 |
| № 8599 | S14 | W53 | 02 | 0010 | ALPHA | Jun 29, 1999 | Jul 6, 1999 | Jul 19, 1999 |
| № 8598 | N22 | W65 | 07 | 0120 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8594 | N14 | W62 | 05 | 0010 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8592 | N23 | W84 | 01 | 0020 | ALPHA | Jun 26, 1999 | Jul 3, 1999 | Jul 17, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to July 1999. The gray background is the average SSN index.
