Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 13
- Number of spots (f)
- 102
- Relative number (R)
- 232
- Observer
- MH
- Reading
- all checks consistent
- File
- 19571007.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 15 | 14 | 6E | ||||
| 2 | E – 10 | 19 | 47E | ||||
| 3 | A – 2 | 9 | 72E | ||||
| 4 | H – 4 | -15 | 18E | ||||
| 5 | C – 11 | -39 | 12E | ||||
| 6 | E – 19 | -15 | 19W | ||||
| 7 | E – 20 | -25 | 35W | ||||
| 8 | J – 1 | -6 | 22W | ||||
| 9 | A – 1 | -15 | 65W | ||||
| 10 | G – 5 | 27 | 62W | ||||
| 11 | A – 1 | 35 | 36W | ||||
| 12 | B – 5 | 42 | 12W | ||||
| 13 | B – 8 | 19 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.