Daily Sunspot Evaluation
Observation Sheet Thursday, 29 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)
- 4
- Number of spots (f)
- 14
- Relative number (R)
- 54
- Observer
- FA
- Reading
- all checks consistent
- File
- 19771229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 21 | 17E | 238 | 15E | ||
| 2 | ? – 2 | -17 | 77E | 178 | 75E | ||
| 3 | H – 5 | -17 | 53E | 202 | 51E | ||
| 4 | J – 1 | 22 | 69W | 324 | 71W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.