Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 April 2000
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 9
- Number of spots (f)
- 84
- Relative number (R)
- 174
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20000412.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 11 | 18E | 82 | 16E | 2 | |
| 2 | CRO – 9 | 14 | 31E | 69 | 29E | 7 | |
| 3 | BXI – 11 | 31 | 49E | 51 | 47E | 11 | |
| 4 | BXE – 6 | 27 | 62E | 38 | 60E | 7 | |
| 5 | DAG – 26 | -17 | 28W | 128 | 30W | 7 | |
| 6 | HS – 3 | -20 | 04W | 104 | 06W | 4 | |
| 7 | CAI – 16 | -19 | 38E | 62 | 36E | 6 | |
| 8 | HS – 3 | -14 | 42E | 58 | 40E | 2 | |
| 9 | EHI – 9 | -21 | 68E | 32 | 66E | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.