Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 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)
- 17
- Number of spots (f)
- 163
- Relative number (R)
- 333
- Observer
- ET
- Reading
- all checks consistent
- File
- 19571001.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 19 | 4E | ||||
| 2 | E – 29 | 28 | 19E | ||||
| 3 | A – 1 | 41 | 59E | ||||
| 4 | A – 1 | 12 | 83E | ||||
| 5 | J – 1 | -6 | 59E | ||||
| 6 | D – 7 | -15 | 62E | ||||
| 7 | H – 12 | -24 | 43E | ||||
| 8 | D – 16 | -13 | 20E | ||||
| 9 | E – 11 | -27 | 35W | ||||
| 10 | J – 3 | 9 | 38W | ||||
| 11 | A – 4 | 13 | 35W | ||||
| 12 | E – 29 | 15 | 53W | ||||
| 13 | J – 1 | 20 | 51W | ||||
| 14 | A – 3 | 22 | 42W | ||||
| 15 | B – 8 | 26 | 44W | ||||
| 16 | D – 8 | 26 | 29W | ||||
| 17 | F – 28 | 17 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.