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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8187 | S23 | W91 | 01 | 0000 | ALPHA | Mar 19, 1998 | Mar 26, 1998 | Apr 9, 1998 |
| № 8185 | S24 | E33 | 21 | 0650 | BETA-GAMMA | Mar 29, 1998 | Apr 5, 1998 | Apr 19, 1998 |
| № 8184 | S20 | W10 | 05 | 0020 | BETA | Mar 26, 1998 | Apr 1, 1998 | Apr 15, 1998 |
| № 8183 | N22 | W25 | 16 | 0220 | BETA | Mar 24, 1998 | Mar 31, 1998 | Apr 14, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to March 1998. The gray background is the average SSN index.
