Daily Sunspot Evaluation
Observation Sheet Saturday, 23 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)
- 12
- Number of spots (f)
- 43
- Relative number (R)
- 163
- Observer
- AB
- Reading
- all checks consistent
- File
- 19600723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 16 | 8 | 8E | ||||
| 2 | C – 4 | -7 | 35E | ||||
| 3 | J – 1 | -11 | 51E | ||||
| 4 | J – 3 | -7 | 30E | ||||
| 5 | A – 1 | -11 | 7E | ||||
| 6 | A – 1 | -18 | 1E | ||||
| 7 | J – 2 | -9 | 3W | ||||
| 8 | A – 1 | -17 | 62W | ||||
| 9 | B – 5 | 9 | 48W | ||||
| 10 | ? – 4 | 22 | 82W | ||||
| 11 | A – 3 | 13 | 20W | ||||
| 12 | J – 2 | 25 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.