Daily Sunspot Evaluation
Observation Sheet Thursday, 20 October 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)
- 2
- Number of spots (f)
- 7
- Relative number (R)
- 27
- Observer
- WG
- Reading
- all checks consistent
- File
- 19551020.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | ? – 1 | 0.99 | 93 | |
| 2 | D – 6 | 0.9 | 99 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.