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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 6, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8480 | N26 | E26 | 03 | 0010 | BETA | Mar 9, 1999 | Mar 16, 1999 | Mar 30, 1999 |
| № 8479 | S13 | W60 | 03 | 0020 | BETA | Mar 2, 1999 | Mar 9, 1999 | Mar 23, 1999 |
| № 8478 | S15 | W66 | 04 | 0020 | BETA | Mar 2, 1999 | Mar 9, 1999 | Mar 22, 1999 |
| № 8477 | S26 | E15 | 21 | 0150 | BETA | Mar 8, 1999 | Mar 15, 1999 | Mar 29, 1999 |
| № 8476 | N18 | W49 | 24 | 0340 | BETA | Mar 3, 1999 | Mar 10, 1999 | Mar 24, 1999 |
| № 8475 | N31 | W37 | 09 | 0050 | BETA | Mar 4, 1999 | Mar 11, 1999 | Mar 25, 1999 |
| № 8471 | N28 | W83 | 01 | 0060 | ALPHA | Mar 1, 1999 | Mar 8, 1999 | Mar 22, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to March 1999. The gray background is the average SSN index.
