Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 1, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8943 | N23 | E20 | 06 | 0010 | BETA | Apr 4, 2000 | Apr 10, 2000 | Apr 24, 2000 |
| № 8942 | S12 | E20 | 04 | 0010 | BETA | Apr 4, 2000 | Apr 10, 2000 | Apr 24, 2000 |
| № 8940 | N14 | E50 | 01 | 0020 | ALPHA | Apr 6, 2000 | Apr 13, 2000 | Apr 26, 2000 |
| № 8939 | N22 | E55 | 03 | 0030 | BETA | Apr 6, 2000 | Apr 13, 2000 | Apr 27, 2000 |
| № 8938 | S07 | E42 | 02 | 0010 | BETA | Apr 5, 2000 | Apr 12, 2000 | Apr 25, 2000 |
| № 8936 | S15 | E47 | 21 | 0260 | BETA-DELTA | Apr 6, 2000 | Apr 12, 2000 | Apr 26, 2000 |
| № 8935 | S08 | E06 | 16 | 0130 | BETA | Apr 2, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8933 | N15 | W17 | 06 | 0030 | BETA | Apr 1, 2000 | Apr 8, 2000 | Apr 21, 2000 |
| № 8932 | S14 | E07 | 08 | 0050 | BETA | Apr 3, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8931 | S14 | W20 | 15 | 0030 | BETA | Mar 31, 2000 | Apr 7, 2000 | Apr 21, 2000 |
| № 8928 | N19 | W39 | 01 | 0010 | ALPHA | Mar 30, 2000 | Apr 6, 2000 | Apr 20, 2000 |
| № 8925 | S18 | W33 | 16 | 0070 | BETA-GAMMA | Mar 30, 2000 | Apr 6, 2000 | Apr 20, 2000 |
| № 8924 | N10 | W42 | 19 | 0290 | BETA-GAMMA-DELTA | Mar 30, 2000 | Apr 6, 2000 | Apr 19, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to April 2000. The gray background is the average SSN index.
