Daily Sunspot Evaluation
Observation Sheet Saturday, 9 July 1955
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)
- 5
- Number of spots (f)
- 30
- Relative number (R)
- 80
- Observer
- AK
- Reading
- all checks consistent
- File
- 19550709.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 10 | 0.49 | 41 | |
| 2 | A – 3 | 0.77 | 58 | |
| 3 | A – 1 | 0.94 | 117 | |
| 4 | A – 2 | 0.88 | 231 | |
| 5 | A – 14 | 0.66 | 316 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.