Daily Sunspot Evaluation
Observation Sheet Monday, 18 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)
- 10
- Number of spots (f)
- 108
- Relative number (R)
- 208
- Observer
- KA
- Reading
- all checks consistent
- File
- 19600718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 6 | 24 | 58E | ||||
| 2 | B – 4 | 10 | 35E | ||||
| 3 | A – 4 | 13 | 46E | ||||
| 4 | J – 1 | 20 | 65E | ||||
| 5 | J – 2 | 9 | 78E | ||||
| 6 | J – 1 | -16 | 4E | ||||
| 7 | C – 6 | 2 | 46W | ||||
| 8 | A – 3 | 12 | 73W | ||||
| 9 | J – 1 | 19 | 65W | ||||
| 10 | ?F – 80 | 21 | 21W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.