Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 April 1980
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)
- 127
- Relative number (R)
- 217
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800409.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKK – 27 | 12 | 26W | 103 | 29W | 14.5 | |
| 2 | FKK – 61 | 24 | 09W | 86 | 12W | 19 | |
| 3 | ? – 1 | 9 | 75E | 2 | 72E | 2 | |
| 4 | ? – 1 | -7 | 81W | 158 | 84W | 2 | |
| 5 | AKK – 1 | -9 | 60W | 137 | 63W | - | |
| 6 | HAI – 10 | -20 | 39E | 38 | 36E | 6.5 | |
| 7 | AKK – 5 | -29 | 51E | 26 | 48E | 6.5 | |
| 8 | CAI – 5 | -32 | 63E | 14 | 60E | 5 | |
| 9 | EKI – 16 | -8 | 65E | 12 | 62E | 11.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.