Daily Sunspot Evaluation
Observation Sheet Friday, 23 November 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)
- 18
- Relative number (R)
- 68
- Observer
- WG
- Reading
- all checks consistent
- File
- 19511123.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | J – 2 | 0.33 | 25 | |
| 2 | ? – 1 | 0.97 | 99 | |
| 3 | B – 5 | 0.48 | 294 | |
| 4 | C – 5 | 0.44 | 307 | |
| 5 | J – 5 | 0.34 | 337 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.