Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 6, 2000. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8950 | N18 | W63 | 01 | 0000 | ALPHA | Apr 2, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8949 | S18 | E77 | 02 | 0050 | ALPHA | Apr 13, 2000 | Apr 20, 2000 | May 3, 2000 |
| № 8948 | S15 | E57 | 07 | 0110 | BETA | Apr 11, 2000 | Apr 18, 2000 | May 2, 2000 |
| № 8945 | S19 | E21 | 06 | 0040 | BETA | Apr 9, 2000 | Apr 15, 2000 | Apr 29, 2000 |
| № 8944 | N08 | E19 | 02 | 0040 | ALPHA | Apr 8, 2000 | Apr 15, 2000 | Apr 29, 2000 |
| № 8943 | N22 | W46 | 04 | 0090 | BETA | Apr 3, 2000 | Apr 10, 2000 | Apr 24, 2000 |
| № 8942 | S10 | W52 | 01 | 0010 | ALPHA | Apr 3, 2000 | Apr 10, 2000 | Apr 23, 2000 |
| № 8940 | N12 | W11 | 04 | 0010 | BETA | Apr 6, 2000 | Apr 13, 2000 | Apr 27, 2000 |
| № 8939 | N23 | W11 | 08 | 0060 | BETA | Apr 6, 2000 | Apr 13, 2000 | Apr 27, 2000 |
| № 8936 | S15 | W20 | 22 | 0210 | BETA-GAMMA | Apr 5, 2000 | Apr 12, 2000 | Apr 26, 2000 |
| № 8935 | S06 | W62 | 01 | 0010 | ALPHA | Apr 2, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8933 | N18 | W83 | 08 | 0290 | BETA | Apr 1, 2000 | Apr 7, 2000 | Apr 21, 2000 |
| № 8932 | S12 | W60 | 10 | 0050 | BETA | Apr 2, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8931 | S14 | W85 | 05 | 0070 | BETA | Mar 31, 2000 | Apr 7, 2000 | Apr 21, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to April 2000. The gray background is the average SSN index.
