Daily Sunspot Evaluation
Observation Sheet Sunday, 30 June 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)
- 12
- Number of spots (f)
- 92
- Relative number (R)
- 212
- Observer
- YÖ
- Reading
- all checks consistent
- File
- 19570630.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 23 | 12 | 4WEE | ||||
| 2 | J – 3 | 11 | 55EE | ||||
| 3 | D – 5 | 13 | 67EE | ||||
| 4 | J – 1 | -17 | 69E | ||||
| 5 | F – 14 | -31 | 66E | ||||
| 6 | C – 8 | -16 | 45E | ||||
| 7 | J – 5 | -11 | 38E | ||||
| 8 | H – 3 | -13 | 24EE | ||||
| 9 | C – 6 | -17 | 15E | ||||
| 10 | B – 10 | -21 | 15E | ||||
| 11 | F – 13 | -23 | 66WE | ||||
| 12 | J – 1 | 21 | 79W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.