Daily Sunspot Evaluation
Observation Sheet Friday, 22 December 1967
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)
- 7
- Number of spots (f)
- 70
- Relative number (R)
- 140
- Observer
- LT
- Reading
- all checks consistent
- File
- 19671222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 14 | 59E | 264 | |||
| 2 | ? – 4 | -23 | 75E | 248 | |||
| 3 | H – 8 | -25 | 10E | 313 | |||
| 4 | B – 3 | -29 | 11E | 312 | |||
| 5 | D – 7 | -17 | 4W | 327 | |||
| 6 | F – 34 | 18 | 68W | 31 | |||
| 7 | H – 13 | 22 | 11W | 334 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.