Daily Sunspot Evaluation
Observation Sheet Saturday, 20 August 1966
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)
- 11
- Relative number (R)
- 41
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 14 | 43E | 253 | |||
| 2 | A – 3 | 22 | 53W | 349 | |||
| 3 | B – 6 | 34 | 67W | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.