Daily Sunspot Evaluation
Observation Sheet Tuesday, 9 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)
- 9
- Number of spots (f)
- 114
- Relative number (R)
- 204
- Observer
- ET
- Reading
- all checks consistent
- File
- 19561009.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 7 | 27 | 17 | |
| 2 | H – 2 | 22 | 49 | |
| 3 | A – 1 | -15 | 60 | |
| 4 | Y – 1 | -22 | 68 | |
| 5 | J – 2 | -24 | 1 | |
| 6 | C – 13 | -13 | 10 | |
| 7 | E – 26 | -20 | 24 | |
| 8 | A – 1 | -32 | 43 | |
| 9 | E – 61 | 21 | 31 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.