Daily Sunspot Evaluation
Observation Sheet Tuesday, 31 December 1968
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)
- 8
- Number of spots (f)
- 39
- Relative number (R)
- 119
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19681231.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 4 | 16 | 17E | 35 | |||
| 2 | J – 1 | 11 | 16E | 36 | |||
| 3 | J – 2 | 17 | 49E | 3 | |||
| 4 | A – 5 | -16 | 33E | 19 | |||
| 5 | J – 5 | -27 | 37W | 89 | |||
| 6 | A – 4 | -23 | 54W | 106 | |||
| 7 | E – 16 | 17 | 56W | 108 | |||
| 8 | J – 2 | 20 | 39W | 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.