Daily Sunspot Evaluation
Observation Sheet Thursday, 28 December 1961
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)
- 4
- Number of spots (f)
- 40
- Relative number (R)
- 80
- Observer
- KA
- Reading
- all checks consistent
- File
- 19611228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 14 | 22 | 0 | ||||
| 2 | D – 8 | 10 | 4E | ||||
| 3 | G – 15 | -4 | 21W | ||||
| 4 | ? – 3 | 13 | 76W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.