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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8185 | S24 | E66 | 01 | 0000 | ALPHA | Mar 27, 1998 | Apr 3, 1998 | Apr 17, 1998 |
| № 8184 | S18 | E48 | 03 | 0050 | BETA | Mar 26, 1998 | Apr 1, 1998 | Apr 15, 1998 |
| № 8183 | N23 | E32 | 13 | 0020 | BETA | Mar 24, 1998 | Mar 31, 1998 | Apr 14, 1998 |
| № 8182 | S25 | W80 | 03 | 0010 | BETA | Mar 16, 1998 | Mar 23, 1998 | Apr 6, 1998 |
| № 8179 | S22 | W67 | 19 | 0770 | BETA-GAMMA | Mar 17, 1998 | Mar 24, 1998 | Apr 6, 1998 |
| № 8178 | S17 | W52 | 01 | 0060 | ALPHA | Mar 18, 1998 | Mar 25, 1998 | Apr 7, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to March 1998. The gray background is the average SSN index.
