Daily Sunspot Evaluation
Observation Sheet Saturday, 9 July 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)
- 8
- Number of spots (f)
- 63
- Relative number (R)
- 143
- Observer
- AB
- Reading
- all checks consistent
- File
- 19600709.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 20 | 15 | 14E | ||||
| 2 | C – 7 | 18 | 55E | ||||
| 3 | J – 4 | -11 | 31E | ||||
| 4 | C – 6 | -10 | 2W | ||||
| 5 | A – 1 | -8 | 72W | ||||
| 6 | E – 13 | 9 | 74W | ||||
| 7 | B – 6 | 10 | 8W | ||||
| 8 | B – 6 | 15 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.