Daily Sunspot Evaluation
Observation Sheet Saturday, 13 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)
- 136
- Relative number (R)
- 236
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600813.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 28 | 22 | 3E | ||||
| 2 | E – 34 | 47 | 49E | ||||
| 3 | ? – 1 | 46 | 78E | ||||
| 4 | ? – 3 | -10 | 73E | ||||
| 5 | E – 19 | -6 | 47E | ||||
| 6 | A – 3 | -12 | 32E | ||||
| 7 | D – 22 | -14 | 18E | ||||
| 8 | C – 19 | -1 | 36W | ||||
| 9 | H – 5 | 20 | 11W | ||||
| 10 | A – 2 | 25 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.