Daily Sunspot Evaluation
Observation Sheet Friday, 11 December 1959
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)
- 7
- Number of spots (f)
- 37
- Relative number (R)
- 107
- Observer
- FY
- Reading
- all checks consistent
- File
- 19591211.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 16 | 19 | 52E | ||||
| 2 | ? – 3 | 9 | 78E | ||||
| 3 | ? – 1 | -2 | 78E | ||||
| 4 | A – 3 | -6 | 39E | ||||
| 5 | ? – 7 | 11 | 77W | ||||
| 6 | H – 2 | 8 | 26W | ||||
| 7 | B – 5 | 27 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.