Daily Sunspot Evaluation
Observation Sheet Friday, 8 December 1967
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)
- 12
- Number of spots (f)
- 35
- Relative number (R)
- 155
- Observer
- LT
- Reading
- all checks consistent
- File
- 19671208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 12 | 4E | 144 | |||
| 2 | D – 9 | 24 | 15E | 133 | |||
| 3 | C – 5 | 19 | 30E | 118 | |||
| 4 | A – 1 | 17 | 50E | 98 | |||
| 5 | A – 1 | 15 | 55E | 93 | |||
| 6 | J – 1 | 9 | 64E | 84 | |||
| 7 | J – 2 | -16 | 54E | 94 | |||
| 8 | E – 10 | -16 | 27E | 121 | |||
| 9 | J – 1 | -24 | 48E | 100 | |||
| 10 | A – 1 | 11 | 28W | 176 | |||
| 11 | A – 1 | 13 | 17W | 165 | |||
| 12 | H – 2 | 10 | 11W | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.