Daily Sunspot Evaluation
Observation Sheet Thursday, 4 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)
- 134
- Relative number (R)
- 264
- Observer
- KA
- Reading
- all checks consistent
- File
- 19570704.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 8 | 10 | 1E | ||||
| 2 | E – 15 | 13 | 15E | ||||
| 3 | D – 15 | 13 | 45E | ||||
| 4 | ? – 5 | -12 | 84E | ||||
| 5 | J – 4 | -16 | 18E | ||||
| 6 | F – 48 | -29 | 10E | ||||
| 7 | H – 1 | -14 | 10W | ||||
| 8 | E – 19 | -12 | 25W | ||||
| 9 | A – 1 | -15 | 38W | ||||
| 10 | H – 8 | 10 | 52W | ||||
| 11 | C – 4 | 11 | 72W | ||||
| 12 | B – 2 | 12 | 19W | ||||
| 13 | A – 4 | 25 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.