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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8161 | N26 | E24 | 03 | 0010 | BETA | Feb 22, 1998 | Mar 1, 1998 | Mar 15, 1998 |
| № 8160 | N22 | W05 | 03 | 0010 | BETA | Feb 20, 1998 | Feb 27, 1998 | Mar 13, 1998 |
| № 8158 | S22 | W17 | 03 | 0010 | BETA | Feb 19, 1998 | Feb 26, 1998 | Mar 12, 1998 |
| № 8156 | S25 | W37 | 16 | 0370 | BETA-GAMMA | Feb 17, 1998 | Feb 24, 1998 | Mar 10, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to February 1998. The gray background is the average SSN index.
