Daily Sunspot Evaluation
Observation Sheet Saturday, 20 August 1960
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)
- 10
- Number of spots (f)
- 141
- Relative number (R)
- 241
- Observer
- AB
- Reading
- all checks consistent
- File
- 19600820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 29 | 24E | ||||
| 2 | B – 12 | 12 | 9E | ||||
| 3 | ? – 1 | 8 | 85E | ||||
| 4 | C – 5 | -9 | 40E | ||||
| 5 | D – 10 | -18 | 47E | ||||
| 6 | E – 47 | -10 | 23W | ||||
| 7 | D – 7 | -14 | 75W | ||||
| 8 | E – 10 | -8 | 50W | ||||
| 9 | C – 22 | 18 | 44W | ||||
| 10 | C – 26 | 16 | 10W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.