Daily Sunspot Evaluation
Observation Sheet Friday, 5 December 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)
- 8
- Number of spots (f)
- 57
- Relative number (R)
- 137
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19801205.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 1 | 13 | 69W | 215 | 72W | 2.5 | |
| 2 | DKC – 11 | 23 | 36W | 182 | 39W | 5.5 | |
| 3 | AXX – 1 | 18 | 11E | 135 | 08E | ||
| 4 | HSX – 3 | 26 | 20E | 126 | 17E | 2.5 | |
| 5 | EKI – 18 | -10 | 30W | 176 | 33W | 12.5 | |
| 6 | DAI – 21 | -10 | 18W | 164 | 21W | 8 | |
| 7 | ARX – 1 | -28 | 12E | 134 | 09E | ||
| 8 | HAX – 1 | -13 | 44E | 102 | 41E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.