Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 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)
- 10
- Number of spots (f)
- 70
- Relative number (R)
- 170
- Observer
- ET
- Reading
- all checks consistent
- File
- 19570611.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 24 | 33 | 44E | ||||
| 2 | J – 1 | 19 | 15E | ||||
| 3 | B – 13 | 14 | 22E | ||||
| 4 | A – 1 | -15 | 57E | ||||
| 5 | A – 1 | -20 | 67E | ||||
| 6 | A – 5 | -28 | 27W | ||||
| 7 | E – 16 | -29 | 50W | ||||
| 8 | H – 3 | -17 | 41W | ||||
| 9 | A – 5 | -16 | 28W | ||||
| 10 | J – 1 | 12 | 56W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.