Daily Sunspot Evaluation
Observation Sheet Thursday, 23 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)
- 10
- Number of spots (f)
- 20
- Relative number (R)
- 120
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 23 | 17E | ||||
| 2 | H – 1 | 19 | 21E | ||||
| 3 | ? – 2 | 23 | 28E | ||||
| 4 | ? – 1 | -17 | 70E | ||||
| 5 | B – 2 | -12 | 37W | ||||
| 6 | J – 1 | 9 | 24W | ||||
| 7 | H – 4 | 11 | 46W | ||||
| 8 | H – 3 | 26 | 53W | ||||
| 9 | C – 3 | 31 | 46W | ||||
| 10 | A – 1 | 27 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.