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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8173 | S15 | E45 | 01 | 0000 | ALPHA | Mar 8, 1998 | Mar 15, 1998 | Mar 29, 1998 |
| № 8172 | N23 | W20 | 01 | 0010 | ALPHA | Mar 3, 1998 | Mar 10, 1998 | Mar 24, 1998 |
| № 8171 | S23 | W48 | 24 | 0300 | BETA | Mar 1, 1998 | Mar 8, 1998 | Mar 22, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to March 1998. The gray background is the average SSN index.
