Daily Sunspot Evaluation
Observation Sheet Monday, 8 December 1969
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)
- 4
- Number of spots (f)
- 9
- Relative number (R)
- 49
- Observer
- AT
- Reading
- all checks consistent
- File
- 19691208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 46 | 03E | 216 | |||
| 2 | J – 2 | -23 | 48W | 267 | |||
| 3 | B – 4 | 8 | 37W | 256 | |||
| 4 | J – 1 | 48 | 02W | 221 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.