Daily Sunspot Evaluation
Observation Sheet Saturday, 10 September 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)
- 6
- Number of spots (f)
- 36
- Relative number (R)
- 96
- Observer
- KA
- Reading
- all checks consistent
- File
- 19550910.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 12 | 0.35 | 9 | |
| 2 | A – 1 | 0.93 | 145 | |
| 3 | C – 12 | 0.58 | 191 | |
| 4 | A – 3 | 0.75 | 201 | |
| 5 | A – 2 | 0.71 | 312 | |
| 6 | H – 6 | 0.62 | 328 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.