Daily Sunspot Evaluation
Observation Sheet Thursday, 5 September 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)
- 8
- Number of spots (f)
- 109
- Relative number (R)
- 189
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570905.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 15 | 11 | 77E | ||||
| 2 | C – 6 | -10 | 31E | ||||
| 3 | B – 17 | -24 | 20E | ||||
| 4 | A – 2 | -15 | 15W | ||||
| 5 | H – 2 | -28 | 62W | ||||
| 6 | G – 2 | -16 | 73W | ||||
| 7 | F – 37 | 16 | 64WE | ||||
| 8 | E – 28 | 26 | 61W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.