Daily Sunspot Evaluation
Observation Sheet Thursday, 20 October 1960
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)
- 38
- Relative number (R)
- 68
- Observer
- KA
- Reading
- all checks consistent
- File
- 19601020.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 29 | 20 | 11E | ||||
| 2 | C – 8 | -10 | 1W | ||||
| 3 | J – 1 | -13 | 63W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.