Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 December 1966
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)
- 5
- Number of spots (f)
- 17
- Relative number (R)
- 67
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19661207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 130 | 35E | 260 | |||
| 2 | A – 1 | 18 | 22E | 278 ⚠ | |||
| 3 | B – 3 | 12 | 26E | 267 | |||
| 4 | H – 1 | 8 | 36E | 259 | |||
| 5 | C – 8 | -2 | 47E | 243 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.