Daily Sunspot Evaluation
Observation Sheet Saturday, 19 October 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)
- 10
- Number of spots (f)
- 95
- Relative number (R)
- 195
- Observer
- FY
- Reading
- all checks consistent
- File
- 19571019.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 24 | 58E | ||||
| 2 | ? – 1 | 23 | 82E | ||||
| 3 | A – 1 | 15 | 39E | ||||
| 4 | ? – 2 | 17 | 77E | ||||
| 5 | A – 1 | -23 | 33E | ||||
| 6 | J – 1 | -16 | 12E | ||||
| 7 | F – 62 | -24 | 18W | ||||
| 8 | D – 6 | -17 | 55W | ||||
| 9 | D – 9 | 24 | 68W | ||||
| 10 | C – 10 | 25 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.