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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 6, 1998. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8351 | S18 | W68 | 01 | 0010 | ALPHA | Oct 2, 1998 | Oct 9, 1998 | Oct 23, 1998 |
| № 8350 | N19 | E26 | 17 | 0240 | BETA | Oct 9, 1998 | Oct 16, 1998 | Oct 30, 1998 |
| № 8349 | S23 | W28 | 01 | 0000 | ALPHA | Oct 5, 1998 | Oct 12, 1998 | Oct 26, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
