Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 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)
- 7
- Number of spots (f)
- 39
- Relative number (R)
- 109
- Observer
- SG
- Reading
- all checks consistent
- File
- 19600713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 16 | 20 | 46E | ||||
| 2 | J – 1 | -17 | 69E | ||||
| 3 | A – 2 | -12 | 13W | ||||
| 4 | B – 2 | -17 | 15W | ||||
| 5 | E – 14 | 15 | 40W | ||||
| 6 | A – 1 | 12 | 4W | ||||
| 7 | J – 3 | 19 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.