Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 9
- Number of spots (f)
- 52
- Relative number (R)
- 142
- Observer
- AB
- Reading
- all checks consistent
- File
- 19601015.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 4 | 25 | 2E | ||||
| 2 | ? – 6 | 20 | 80E | ||||
| 3 | C – 4 | -12 | 65E | ||||
| 4 | A – 2 | -20 | 44E | ||||
| 5 | A – 1 | -7 | 13E | ||||
| 6 | A – 3 | -15 | 18E | ||||
| 7 | C – 14 | -13 | 6E | ||||
| 8 | B – 5 | -7 | 3E | ||||
| 9 | D – 13 | 13 | 55W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.