Daily Sunspot Evaluation
Observation Sheet Monday, 29 July 1957
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)
- 73
- Relative number (R)
- 173
- Observer
- KA
- Reading
- all checks consistent
- File
- 19570729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 25 | 83E | ||||
| 2 | ? – 3 | 10 | 77E | ||||
| 3 | A – 1 | -2 | 40E | ||||
| 4 | A – 1 | -15 | 16E | ||||
| 5 | H – 11 | -30 | 51E | ||||
| 6 | C – 8 | -28 | 37E | ||||
| 7 | J – 1 | -12 | 1E | ||||
| 8 | H – 28 | 12 | 40W | ||||
| 9 | D – 12 | 22 | 34W | ||||
| 10 | ? – 3 | 33 | 68W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.