Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 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)
- 7
- Number of spots (f)
- 39
- Relative number (R)
- 109
- Observer
- SM
- Reading
- all checks consistent
- File
- 19681204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 18 | 12 | 20E | 30 | |||
| 2 | J – 1 | 18 | 70E | 340 | |||
| 3 | C – 3 | -13 | 32E | 18 | |||
| 4 | C – 3 | -25 | 47E | 3 | |||
| 5 | G – 9 | -13 | 11E | 39 | |||
| 6 | A – 4 | -8 | 07W | 57 | |||
| 7 | A – 1 | 6 | 58W | 108 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.