Daily Sunspot Evaluation
Observation Sheet Thursday, 25 January 1951
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)
- 52
- Relative number (R)
- 92
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510125.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | D – 12 | 0.64 | 58 | |
| 2 | E – 29 | 0.8 | 67 | |
| 3 | D – 10 | 0.64 | 89 | |
| 4 | A – 1 | 0.47 | 97 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.