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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 25, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8226 | N18 | W30 | 20 | 0200 | BETA | May 24, 1998 | May 31, 1998 | Jun 13, 1998 |
| № 8225 | S18 | E46 | 01 | 0010 | ALPHA | May 30, 1998 | Jun 6, 1998 | Jun 19, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to May 1998. The gray background is the average SSN index.
