Daily Sunspot Evaluation
Observation Sheet Friday, 16 December 1960
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)
- 65
- Relative number (R)
- 155
- Observer
- AK
- Reading
- all checks consistent
- File
- 19601216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -15 | 19E | ||||
| 2 | B – 2 | -18 | 15W | ||||
| 3 | C – 3 | -13 | 42W | ||||
| 4 | A – 1 | -11 | 50W | ||||
| 5 | C – 21 | -4 | 20W | ||||
| 6 | D – 21 | 17 | 23W | ||||
| 7 | B – 13 | 14 | 34W | ||||
| 8 | A – 2 | 24 | 50W | ||||
| 9 | A – 1 | 28 | 70W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.