Daily Sunspot Evaluation
Observation Sheet Thursday, 13 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)
- 11
- Number of spots (f)
- 55
- Relative number (R)
- 165
- Observer
- AK
- Reading
- all checks consistent
- File
- 19601013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 20 | 30E | ||||
| 2 | A – 1 | -7 | 40E | ||||
| 3 | A – 1 | -16 | 68E | ||||
| 4 | B – 3 | -7 | 31E | ||||
| 5 | C – 7 | -16 | 45E | ||||
| 6 | C – 10 | -13 | 33E | ||||
| 7 | A – 1 | -19 | 41W | ||||
| 8 | C – 5 | -16 | 65W | ||||
| 9 | A – 1 | 5 | 54W | ||||
| 10 | C – 5 | 8 | 69W | ||||
| 11 | E – 19 | 12 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.