Daily Sunspot Evaluation
Observation Sheet Sunday, 25 December 1977
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)
- 3
- Number of spots (f)
- 18
- Relative number (R)
- 48
- Observer
- GT
- Reading
- all checks consistent
- File
- 19771225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 20 | 55E | 253 | 53E | ||
| 2 | D – 10 | -28 | 48W | 356 | 50W | ||
| 3 | J – 3 | 23 | 20W | 328 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.