Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 December 1965
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)
- 3
- Number of spots (f)
- 19
- Relative number (R)
- 49
- Observer
- SK
- Reading
- all checks consistent
- File
- 19651228.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 28 | 51E | 108 | |||
| 2 | D – 4 | -28 | 38E | 120 | |||
| 3 | E – 13 | 10 | 45W | 204 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.