Daily Sunspot Evaluation
Observation Sheet Saturday, 27 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)
- 9
- Number of spots (f)
- 88
- Relative number (R)
- 178
- Observer
- YÖ
- Reading
- all checks consistent
- File
- 19570727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -15 | 22E | ||||
| 2 | ? – 2 | -33 | 75E | ||||
| 3 | J – 3 | -22 | 60HE | ||||
| 4 | ? – 1 | 25 | 90H | ||||
| 5 | A – 1 | 30 | 75H | ||||
| 6 | A – 2 | 33 | 62H | ||||
| 7 | D – 15 | 34 | 39H | ||||
| 8 | C – 16 | 21 | 5H | ||||
| 9 | E – 47 | 10 | 41H |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.