Daily Sunspot Evaluation
Observation Sheet Friday, 17 August 1956
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)
- 9
- Number of spots (f)
- 51
- Relative number (R)
- 141
- Observer
- KA
- Reading
- all checks consistent
- File
- 19560817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 49 | 69E | ||||
| 2 | C – 5 | 27 | 56E | ||||
| 3 | H – 2 | 21 | 40E | ||||
| 4 | ? – 1 | 24 | 81E | ||||
| 5 | A – 1 | -20 | 56E | ||||
| 6 | A – 1 | -17 | 18W | ||||
| 7 | E – 24 | -18 | 29W | ||||
| 8 | C – 6 | 24 | 59W | ||||
| 9 | B – 10 | 29 | 9W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.