Daily Sunspot Evaluation
Observation Sheet Monday, 6 December 1971
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)
- 43
- Relative number (R)
- 113
- Observer
- FA
- Reading
- all checks consistent
- File
- 19711206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 6 | 10 | 18E | 310 | |||
| 2 | ? – 1 | -3 | 79E | 249 | |||
| 3 | J – 4 | -14 | 28E | 300 | |||
| 4 | E – 17 | -5 | 06E | 322 | |||
| 5 | A – 4 | -16 | 68W | 36 | |||
| 6 | A – 1 | -13 | 69W | 37 | |||
| 7 | D – 10 | 8 | 21W | 349 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.