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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 7, 1999. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8483 | S18 | W08 | 09 | 0020 | BETA | Mar 8, 1999 | Mar 14, 1999 | Mar 28, 1999 |
| № 8482 | S26 | E61 | 01 | 0000 | ALPHA | Mar 13, 1999 | Mar 20, 1999 | Apr 3, 1999 |
| № 8480 | N25 | E07 | 01 | 0010 | ALPHA | Mar 9, 1999 | Mar 16, 1999 | Mar 30, 1999 |
| № 8479 | S13 | W78 | 01 | 0000 | ALPHA | Mar 2, 1999 | Mar 9, 1999 | Mar 23, 1999 |
| № 8478 | S15 | W83 | 01 | 0000 | ALPHA | Mar 2, 1999 | Mar 9, 1999 | Mar 22, 1999 |
| № 8477 | S29 | W02 | 21 | 0150 | BETA | Mar 8, 1999 | Mar 15, 1999 | Mar 29, 1999 |
| № 8476 | N17 | W65 | 19 | 0330 | BETA | Mar 3, 1999 | Mar 10, 1999 | Mar 24, 1999 |
| № 8475 | N30 | W54 | 03 | 0020 | BETA | Mar 4, 1999 | Mar 11, 1999 | Mar 25, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to March 1999. The gray background is the average SSN index.
