Daily Sunspot Evaluation
Observation Sheet Sunday, 9 September 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)
- 5
- Number of spots (f)
- 70
- Relative number (R)
- 120
- Observer
- MH
- Reading
- all checks consistent
- File
- 19560909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 25 | 9E | ||||
| 2 | E – 47 | -23 | 32E | ||||
| 3 | D – 15 | -15 | 14E | ||||
| 4 | B – 5 | -13 | 20W | ||||
| 5 | ? – 2 | 31 | 85W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.