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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 10, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8580 | S19 | E69 | 02 | 0240 | ALPHA | Jun 16, 1999 | Jun 23, 1999 | Jul 7, 1999 |
| № 8579 | N12 | E12 | 03 | 0010 | BETA | Jun 12, 1999 | Jun 19, 1999 | Jul 2, 1999 |
| № 8578 | N19 | W07 | 10 | 0070 | BETA | Jun 10, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8577 | N19 | W50 | 05 | 0050 | BETA | Jun 7, 1999 | Jun 14, 1999 | Jun 28, 1999 |
| № 8576 | S29 | E12 | 03 | 0010 | BETA | Jun 12, 1999 | Jun 19, 1999 | Jul 3, 1999 |
| № 8575 | N13 | W05 | 02 | 0010 | BETA | Jun 10, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8574 | N29 | W10 | 27 | 0300 | BETA | Jun 10, 1999 | Jun 17, 1999 | Jul 1, 1999 |
| № 8571 | S19 | E11 | 13 | 0130 | BETA | Jun 12, 1999 | Jun 19, 1999 | Jul 2, 1999 |
| № 8570 | S13 | E10 | 02 | 0060 | ALPHA | Jun 12, 1999 | Jun 18, 1999 | Jul 2, 1999 |
| № 8569 | N19 | E08 | 14 | 0130 | BETA | Jun 11, 1999 | Jun 18, 1999 | Jul 2, 1999 |
| № 8564 | S14 | W38 | 01 | 0010 | ALPHA | Jun 8, 1999 | Jun 15, 1999 | Jun 28, 1999 |
| № 8558 | N15 | W90 | 02 | 0080 | BETA | Jun 4, 1999 | Jun 11, 1999 | Jun 25, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to June 1999. The gray background is the average SSN index.
