Daily Sunspot Evaluation
Observation Sheet Friday, 7 January 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)
- 4
- Number of spots (f)
- 56
- Relative number (R)
- 96
- Observer
- ET
- Reading
- all checks consistent
- File
- 19550107.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | E – 43 | 0.45 | 28 | |
| 2 | ? – 3 | 0.98 | 51 | |
| 3 | B – 6 | 0.5 | 187 | |
| 4 | B – 4 | 0.52 | 224 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.