Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 71
- Relative number (R)
- 161
- Observer
- AK
- Reading
- all checks consistent
- File
- 19571119.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 15 | 28 | 7E | ||||
| 2 | J – 3 | 15 | 14E | ||||
| 3 | D – 18 | 17 | 24E | ||||
| 4 | J – 1 | 20 | 61E | ||||
| 5 | ? – 1 | -13 | 74E | ||||
| 6 | A – 7 | -14 | 58E | ||||
| 7 | C – 9 | -7 | 19W | ||||
| 8 | E – 4 | 8 | 33W | ||||
| 9 | E – 13 | 12 | 21W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.