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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 24, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8603 | S16 | E75 | 02 | 0040 | BETA | Jul 1, 1999 | Jul 8, 1999 | Jul 21, 1999 |
| № 8602 | N19 | E75 | 06 | 0100 | BETA | Jul 1, 1999 | Jul 8, 1999 | Jul 21, 1999 |
| № 8601 | S15 | W36 | 04 | 0020 | BETA | Jun 22, 1999 | Jun 29, 1999 | Jul 13, 1999 |
| № 8600 | N19 | W37 | 03 | 0020 | BETA | Jun 22, 1999 | Jun 29, 1999 | Jul 13, 1999 |
| № 8599 | S17 | E52 | 07 | 0110 | BETA | Jun 29, 1999 | Jul 6, 1999 | Jul 20, 1999 |
| № 8598 | N23 | E43 | 17 | 0270 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 19, 1999 |
| № 8596 | N20 | E27 | 01 | 0020 | ALPHA | Jun 27, 1999 | Jul 4, 1999 | Jul 18, 1999 |
| № 8595 | N23 | W08 | 05 | 0020 | BETA | Jun 24, 1999 | Jul 1, 1999 | Jul 15, 1999 |
| № 8594 | N14 | E40 | 10 | 0240 | BETA | Jun 28, 1999 | Jul 5, 1999 | Jul 18, 1999 |
| № 8592 | N22 | E18 | 02 | 0060 | BETA | Jun 26, 1999 | Jul 3, 1999 | Jul 17, 1999 |
| № 8585 | N38 | W55 | 02 | 0100 | ALPHA | Jun 21, 1999 | Jun 28, 1999 | Jul 13, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to June 1999. The gray background is the average SSN index.
