Daily Sunspot Evaluation
Observation Sheet Monday, 29 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)
- 5
- Number of spots (f)
- 86
- Relative number (R)
- 136
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510129.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 2 | 0.71 | 37 | |
| 2 | A – 5 | 0.83 | 44 | |
| 3 | C – 6 | 0.23 | 235 | |
| 4 | D – 18 | 0.37 | 300 | |
| 5 | F – 55 | 0.21 | 342 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.