Daily Sunspot Evaluation
Observation Sheet Sunday, 14 December 1969
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)
- 17
- Relative number (R)
- 77
- Observer
- SM
- Reading
- all checks consistent
- File
- 19691214.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 16 | 54E | 86 | |||
| 2 | H – 2 | 14 | 63E | 77 | |||
| 3 | ? – 1 | 13 | 78E | 62 | |||
| 4 | J – 1 | 7 | 51E | 89 | |||
| 5 | C – 10 | -11 | 51E | 89 | |||
| 6 | H – 2 | -3 | 30W | 170 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.