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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8180 | S30 | E05 | 01 | 0000 | ALPHA | Mar 18, 1998 | Mar 25, 1998 | Apr 8, 1998 |
| № 8179 | S22 | W06 | 45 | 0670 | BETA-GAMMA-DELTA | Mar 17, 1998 | Mar 24, 1998 | Apr 6, 1998 |
| № 8178 | S16 | E05 | 01 | 0130 | ALPHA | Mar 18, 1998 | Mar 24, 1998 | Apr 7, 1998 |
| № 8176 | S38 | W36 | 12 | 0100 | BETA | Mar 14, 1998 | Mar 22, 1998 | Apr 5, 1998 |
| № 8175 | N47 | W39 | 01 | 0000 | ALPHA | Mar 14, 1998 | Mar 22, 1998 | Apr 6, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to March 1998. The gray background is the average SSN index.
