Daily Sunspot Evaluation
Observation Sheet Wednesday, 27 April 1960
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)
- 6
- Number of spots (f)
- 56
- Relative number (R)
- 116
- Observer
- AB
- Reading
- all checks consistent
- File
- 19600427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 20 | 12 | 4E | ||||
| 2 | C – 10 | -4 | 40E | ||||
| 3 | C – 6 | -12 | 15W | ||||
| 4 | B – 7 | -16 | 30W | ||||
| 5 | ? – 5 | 8 | 80W | ||||
| 6 | B – 8 | 6 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.