Daily Sunspot Evaluation
Observation Sheet Friday, 2 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)
- 7
- Number of spots (f)
- 65
- Relative number (R)
- 135
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570802.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 22 | 27 | 29E | ||||
| 2 | A – 1 | 9 | 62E | ||||
| 3 | H – 21 | -30 | 1E | ||||
| 4 | C – 6 | -27 | 14W | ||||
| 5 | H – 1 | -13 | 51W | ||||
| 6 | A – 1 | 25 | 32W | ||||
| 7 | C – 13 | 34 | 18W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.