Daily Sunspot Evaluation
Observation Sheet Saturday, 11 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)
- 45
- Relative number (R)
- 145
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 17 | 16E | ||||
| 2 | A – 2 | 24 | 47E | ||||
| 3 | H – 7 | 16 | 45E | ||||
| 4 | J – 1 | 10 | 85E | ||||
| 5 | J – 2 | 5 | 66E | ||||
| 6 | J – 2 | -24 | 80E | ||||
| 7 | C – 10 | -14 | 16E | ||||
| 8 | D – 8 | 8 | 46W | ||||
| 9 | J – 6 | 15 | 84W | ||||
| 10 | A – 1 | 11 | 4W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.