Daily Sunspot Evaluation
Observation Sheet Friday, 5 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)
- 13
- Number of spots (f)
- 138
- Relative number (R)
- 268
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570705.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 11 | 13 | 5E | ||||
| 2 | C – 15 | 12 | 32E | ||||
| 3 | ? – 10 | -13 | 67E | ||||
| 4 | J – 3 | -16 | 4E | ||||
| 5 | F – 53 | -25 | 0 | ||||
| 6 | A – 1 | -17 | 11W | ||||
| 7 | J – 2 | -15 | 23W | ||||
| 8 | E – 10 | -12 | 38W | ||||
| 9 | A – 1 | -16 | 51W | ||||
| 10 | H – 9 | 10 | 68W | ||||
| 11 | E – 13 | 11 | 13W | ||||
| 12 | D – 9 | 13 | 3W | ||||
| 13 | J – 1 | 25 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.