Daily Sunspot Evaluation
Observation Sheet Friday, 15 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)
- 5
- Number of spots (f)
- 55
- Relative number (R)
- 105
- Observer
- AK
- Reading
- all checks consistent
- File
- 19600715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 44 | 19 | 18E | ||||
| 2 | B – 2 | -18 | 74E | ||||
| 3 | J – 1 | -17 | 40E | ||||
| 4 | D – 6 | 15 | 66W | ||||
| 5 | J – 2 | 19 | 27W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.