Daily Sunspot Evaluation
Observation Sheet Thursday, 3 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)
- 119
- Relative number (R)
- 289
- Observer
- ET
- Reading
- all checks consistent
- File
- 19571003.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 7 | 43 | 38E | ||||
| 2 | A – 1 | 32 | 70E | ||||
| 3 | A – 1 | 13 | 55E | ||||
| 4 | J – 1 | -5 | 33E | ||||
| 5 | ? – 3 | -14 | 72E | ||||
| 6 | E – 18 | -14 | 35E | ||||
| 7 | D – 5 | -38 | 56E | ||||
| 8 | G – 8 | -22 | 18E | ||||
| 9 | C – 6 | -15 | 7W | ||||
| 10 | C – 7 | -27 | 62W | ||||
| 11 | B – 2 | 9 | 17W | ||||
| 12 | F – 18 | 16 | 33W | ||||
| 13 | A – 3 | 9 | 64W | ||||
| 14 | ? – 2 | 13 | 73W | ||||
| 15 | J – 1 | 20 | 76W | ||||
| 16 | C – 3 | 25 | 57W | ||||
| 17 | E – 33 | 28 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.