Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8947 | N23 | W02 | 02 | 0000 | BETA | Apr 5, 2000 | Apr 12, 2000 | Apr 26, 2000 |
| № 8946 | S24 | W14 | 01 | 0000 | ALPHA | Apr 4, 2000 | Apr 11, 2000 | Apr 25, 2000 |
| № 8945 | S18 | E42 | 05 | 0040 | BETA | Apr 9, 2000 | Apr 15, 2000 | Apr 29, 2000 |
| № 8944 | N09 | E40 | 01 | 0060 | ALPHA | Apr 8, 2000 | Apr 15, 2000 | Apr 29, 2000 |
| № 8943 | N23 | W24 | 04 | 0050 | BETA | Apr 3, 2000 | Apr 10, 2000 | Apr 24, 2000 |
| № 8942 | S10 | W29 | 01 | 0000 | ALPHA | Apr 3, 2000 | Apr 10, 2000 | Apr 23, 2000 |
| № 8940 | N14 | E08 | 05 | 0010 | BETA | Apr 6, 2000 | Apr 13, 2000 | Apr 26, 2000 |
| № 8939 | N24 | E10 | 11 | 0080 | BETA | Apr 6, 2000 | Apr 13, 2000 | Apr 27, 2000 |
| № 8936 | S14 | E02 | 24 | 0390 | BETA-DELTA | Apr 5, 2000 | Apr 12, 2000 | Apr 26, 2000 |
| № 8935 | S07 | W38 | 06 | 0030 | BETA | Apr 2, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8933 | N18 | W62 | 16 | 0240 | BETA | Apr 1, 2000 | Apr 7, 2000 | Apr 21, 2000 |
| № 8932 | S12 | W36 | 10 | 0040 | BETA | Apr 3, 2000 | Apr 9, 2000 | Apr 23, 2000 |
| № 8931 | S13 | W64 | 11 | 0070 | BETA | Mar 31, 2000 | Apr 7, 2000 | Apr 21, 2000 |
| № 8925 | S19 | W74 | 01 | 0010 | ALPHA | Mar 31, 2000 | Apr 7, 2000 | Apr 20, 2000 |
| № 8924 | N12 | W86 | 04 | 0080 | BETA | 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.
