Daily Sunspot Evaluation
Observation Sheet Sunday, 29 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)
- 17
- Number of spots (f)
- 124
- Relative number (R)
- 294
- Observer
- WG
- Reading
- all checks consistent
- File
- 19571229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 25 | 29E | ||||
| 2 | D – 10 | 19 | 29E | ||||
| 3 | J – 1 | 22 | 66E | ||||
| 4 | J – 3 | 18 | 70E | ||||
| 5 | C – 11 | -10 | 18E | ||||
| 6 | B – 2 | -18 | 16E | ||||
| 7 | A – 1 | -25 | 19E | ||||
| 8 | C – 20 | -24 | 8E | ||||
| 9 | A – 1 | -23 | 20W | ||||
| 10 | H – 12 | -19 | 36W | ||||
| 11 | H – 13 | -26 | 64W | ||||
| 12 | ? – 1 | -24 | 81W | ||||
| 13 | A – 2 | -16 | 58W | ||||
| 14 | J – 3 | -2 | 15W | ||||
| 15 | C – 10 | 5 | 38W | ||||
| 16 | F – 27 | 23 | 60W | ||||
| 17 | H – 5 | 13 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.