Daily Sunspot Evaluation
Observation Sheet Wednesday, 17 October 1956
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)
- 6
- Number of spots (f)
- 30
- Relative number (R)
- 90
- Observer
- MH
- Reading
- all checks consistent
- File
- 19561017.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 23 | 54E | ||||
| 2 | J – 2 | -23 | 6E | ||||
| 3 | C – 16 | -20 | 33W | ||||
| 4 | B – 6 | -11 | 58W | ||||
| 5 | H – 1 | 22 | 58W | ||||
| 6 | B – 4 | 18 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.