Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 80
- Relative number (R)
- 180
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570627.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 21 | 12 | 37E | ||||
| 2 | G – 3 | -12 | 70E | ||||
| 3 | J – 1 | -15 | 55E | ||||
| 4 | J – 1 | -23 | 57E | ||||
| 5 | B – 5 | -21 | 9E | ||||
| 6 | F – 35 | -22 | 25W | ||||
| 7 | ? – 4 | -40 | 65W | ||||
| 8 | G – 3 | 16 | 70W | ||||
| 9 | G – 6 | 22 | 57W | ||||
| 10 | J – 1 | 22 | 39W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.