Daily Sunspot Evaluation
Observation Sheet Thursday, 1 August 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)
- 6
- Number of spots (f)
- 61
- Relative number (R)
- 121
- Observer
- KA
- Reading
- all checks consistent
- File
- 19570801.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 19 | 26 | 39E | ||||
| 2 | H – 20 | -31 | 12E | ||||
| 3 | H – 4 | -29 | 5W | ||||
| 4 | H – 1 | -14 | 40W | ||||
| 5 | ? – 2 | 14 | 84W | ||||
| 6 | B – 15 | 32 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.