Daily Sunspot Evaluation
Observation Sheet Saturday, 16 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)
- 9
- Number of spots (f)
- 55
- Relative number (R)
- 145
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 39 | 20 | 5E | ||||
| 2 | ? – 1 | 24 | 85E | ||||
| 3 | A – 2 | 16 | 62E | ||||
| 4 | ? – 1 | 13 | 74E | ||||
| 5 | B – 2 | -18 | 62E | ||||
| 6 | J – 1 | -17 | 28E | ||||
| 7 | B – 4 | 2 | 19W | ||||
| 8 | D – 3 | 15 | 80W | ||||
| 9 | J – 2 | 19 | 40W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.