Daily Sunspot Evaluation
Observation Sheet Wednesday, 1 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)
- 8
- Number of spots (f)
- 57
- Relative number (R)
- 137
- Observer
- FA
- Reading
- all checks consistent
- File
- 19711201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -4 | 78E | 318 | |||
| 2 | B – 4 | -11 | 35E | 1 | |||
| 3 | A – 1 | -16 | 03E | 33 | |||
| 4 | A – 2 | -13 | 01W | 37 | |||
| 5 | E – 25 | -18 | 54W | 90 | |||
| 6 | C – 7 | -11 | 59W | 95 | |||
| 7 | B – 8 | -9 | 48W | 84 | |||
| 8 | J – 7 | 13 | 43W | 79 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.