Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 4
- Number of spots (f)
- 37
- Relative number (R)
- 77
- Observer
- ET
- Reading
- all checks consistent
- File
- 19511112.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | H – 9 | 0.6 | 265 | |
| 2 | H – 18 | 0.44 | 270 | |
| 3 | A – 2 | 0.82 | 311 | |
| 4 | B – 8 | 0.15 | 346 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.