Daily Sunspot Evaluation
Observation Sheet Wednesday, 25 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)
- 18
- Number of spots (f)
- 103
- Relative number (R)
- 283
- Observer
- MH
- Reading
- all checks consistent
- File
- 19571225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 14 | 28E | ||||
| 2 | ? – 1 | 18 | 78E | ||||
| 3 | A – 1 | 9 | 57E | ||||
| 4 | J – 2 | -3 | 37E | ||||
| 5 | J – 1 | -8 | 70E | ||||
| 6 | A – 1 | -19 | 68E | ||||
| 7 | A – 1 | -26 | 71E | ||||
| 8 | B – 6 | -21 | 29E | ||||
| 9 | C – 12 | -19 | 18E | ||||
| 10 | H – 4 | -16 | 2W | ||||
| 11 | F – 17 | -25 | 18W | ||||
| 12 | A – 1 | -14 | 21W | ||||
| 13 | G – 4 | -5 | 65W | ||||
| 14 | ? – 2 | 16 | 81W | ||||
| 15 | H – 2 | 17 | 67W | ||||
| 16 | J – 1 | 23 | 58W | ||||
| 17 | D – 11 | 15 | 34W | ||||
| 18 | E – 34 | 25 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.