Daily Sunspot Evaluation
Observation Sheet Sunday, 18 November 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)
- 11
- Number of spots (f)
- 109
- Relative number (R)
- 219
- Observer
- FY
- Reading
- all checks consistent
- File
- 19561118.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | H – 6 | 14 | 41 | |
| 2 | ? – 13 | -24 | 73 | |
| 3 | C – 17 | -17 | 35 | |
| 4 | B – 7 | -24 | 33 | |
| 5 | F – 53 | -15 | 30 | |
| 6 | ? – 2 | -19 | 80 | |
| 7 | A – 6 | -8 | 69 | |
| 8 | ? – 1 | 15 | 83 | |
| 9 | J – 1 | 20 | 49 | |
| 10 | A – 1 | 26 | 68 | |
| 11 | A – 2 | 23 | 41 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.