Daily Sunspot Evaluation
Observation Sheet Thursday, 14 September 1961
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)
- 3
- Number of spots (f)
- 97
- Relative number (R)
- 127
- Observer
- PO
- Reading
- all checks consistent
- File
- 19610914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 24 | 14 | 23E | ||||
| 2 | E – 49 | -12 | 5E | ||||
| 3 | B – 24 | 20 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.