Daily Sunspot Evaluation
Observation Sheet Saturday, 12 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)
- 5
- Number of spots (f)
- 49
- Relative number (R)
- 99
- Observer
- AB
- Reading
- all checks consistent
- File
- 19591212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 35 | 19 | 37E | ||||
| 2 | D – 6 | 8 | 62E | ||||
| 3 | H – 2 | -3 | 62E | ||||
| 4 | B – 5 | -7 | 25E | ||||
| 5 | J – 1 | 7 | 40W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.