Daily Sunspot Evaluation
Observation Sheet Tuesday, 8 December 1970
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)
- 67
- Relative number (R)
- 137
- Observer
- FA
- Reading
- all checks consistent
- File
- 19701208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 27 | 16 | 47E | 35 | |||
| 2 | ? – 7 | 14 | 78E | 4 | |||
| 3 | E – 21 | -10 | 29E | 53 | |||
| 4 | G – 5 | -18 | 49W | 131 | |||
| 5 | H – 5 | -11 | 35W | 117 | |||
| 6 | J – 1 | 15 | 74W | 156 | |||
| 7 | J – 1 | 22 | 60W | 142 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.