Daily Sunspot Evaluation
Observation Sheet Saturday, 6 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)
- 7
- Number of spots (f)
- 24
- Relative number (R)
- 94
- Observer
- AT
- Reading
- all checks consistent
- File
- 19691206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 17 | 24E | 222 | |||
| 2 | G – 7 | -21 | 20W | 266 | |||
| 3 | B – 4 | -10 | 12W | 258 | |||
| 4 | A – 2 | -18 | 59W | 305 | |||
| 5 | H – 1 | -15 | 74W | 320 | |||
| 6 | A – 3 | 7 | 34W | 280 | |||
| 7 | ? – 6 | 21 | 72W | 318 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.