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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8189 | S26 | W19 | 05 | 0010 | BETA | Mar 28, 1998 | Apr 4, 1998 | Apr 18, 1998 |
| № 8188 | N30 | E28 | 01 | 0000 | ALPHA | Mar 31, 1998 | Apr 7, 1998 | Apr 22, 1998 |
| № 8185 | S24 | W05 | 31 | 0480 | BETA-GAMMA | Mar 29, 1998 | Apr 5, 1998 | Apr 19, 1998 |
| № 8183 | N22 | W64 | 03 | 0130 | 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.
