Daily Sunspot Evaluation
Observation Sheet Sunday, 1 December 1968
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)
- 5
- Number of spots (f)
- 52
- Relative number (R)
- 102
- Observer
- AT
- Reading
- all checks consistent
- File
- 19681201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 16 | 13 | 60°E | 29 | |||
| 2 | C – 10 | -13 | 52°E | 37 | |||
| 3 | A – 7 | -20 | 58°W | 147 | |||
| 4 | J – 2 | -14 | 78°W | 167 | |||
| 5 | D – 17 | -8 | 54°W | 143 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.