Daily Sunspot Evaluation
Observation Sheet Saturday, 13 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)
- 48
- Relative number (R)
- 138
- Observer
- FY
- Reading
- all checks consistent
- File
- 19561013.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | B – 3 | -24 | 63 | |
| 2 | E – 11 | -23 | 18 | |
| 3 | C – 6 | -24 | 54 | |
| 4 | ? – 4 | -20 | 75 | |
| 5 | C – 8 | -13 | 68 | |
| 6 | ? – 3 | 20 | 83 | |
| 7 | C – 10 | 22 | 63 | |
| 8 | B – 2 | 30 | 55 | |
| 9 | H – 1 | 22 | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.