Daily Sunspot Evaluation
Observation Sheet Saturday, 14 December 1957
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)
- 11
- Number of spots (f)
- 55
- Relative number (R)
- 165
- Observer
- WG
- Reading
- all checks consistent
- File
- 19571214.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 22 | 41E | ||||
| 2 | A – 2 | 17 | 47E | ||||
| 3 | ? – 3 | 19 | 78E | ||||
| 4 | H – 9 | -15 | 64E | ||||
| 5 | D – 12 | -12 | 24E | ||||
| 6 | J – 1 | -19 | 26E | ||||
| 7 | A – 1 | -21 | 35E | ||||
| 8 | A – 1 | -24 | 44E | ||||
| 9 | A – 1 | -11 | 17W | ||||
| 10 | G – 2 | -20 | 59W | ||||
| 11 | E – 22 | 10 | 42W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.