Daily Sunspot Evaluation
Observation Sheet Thursday, 9 July 1959
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)
- 50
- Relative number (R)
- 140
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590709.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 17 | 44E | ||||
| 2 | A – 2 | 19 | 50E | ||||
| 3 | A – 1 | 22 | 61E | ||||
| 4 | H – 6 | 16 | 71E | ||||
| 5 | A – 1 | -6 | 27E | ||||
| 6 | B – 3 | -11 | 4E | ||||
| 7 | E – 6 | 7 | 68W | ||||
| 8 | F – 25 | 13 | 60W | ||||
| 9 | J – 1 | 17 | 43W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.