Daily Sunspot Evaluation
Observation Sheet Monday, 18 November 1957
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)
- 9
- Number of spots (f)
- 64
- Relative number (R)
- 154
- Observer
- FY
- Reading
- all checks consistent
- File
- 19571118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 10 | 27 | 22E | ||||
| 2 | J – 3 | 14 | 28E | ||||
| 3 | B – 7 | 17 | 38E | ||||
| 4 | ? – 1 | 20 | 74E | ||||
| 5 | B – 2 | -10 | 4E | ||||
| 6 | D – 6 | -8 | 6W | ||||
| 7 | ? – 1 | -20 | 79W | ||||
| 8 | F – 13 | 7 | 60W | ||||
| 9 | E – 21 | 12 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.