Daily Sunspot Evaluation
Observation Sheet Friday, 19 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)
- 4
- Number of spots (f)
- 19
- Relative number (R)
- 59
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660819.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 14 | 57°E | 253 | |||
| 2 | B – 9 | 22 | 40°W | 350 | |||
| 3 | A – 1 | 31 | 60°W | 10 | |||
| 4 | B – 6 | 34 | 53°W | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.