Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 January 1953
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)
- 3
- Number of spots (f)
- 21
- Relative number (R)
- 51
- Observer
- AK
- Reading
- all checks consistent
- File
- 19530107.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 15 | 0.62 | 50 | |
| 2 | J – 1 | 0.89 | 85 | |
| 3 | A – 5 | 0.84 | 286 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.