Daily Sunspot Evaluation
Observation Sheet Monday, 27 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)
- 33
- Relative number (R)
- 103
- Observer
- FA
- Reading
- all checks consistent
- File
- 19711227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | -4 | 87E | 327 | |||
| 2 | C – 9 | -13 | 09E | 45 | |||
| 3 | A – 3 | -12 | 25W | 79 | |||
| 4 | D – 14 | -15 | 43W | 97 | |||
| 5 | H – 2 | -14 | 61W | 115 | |||
| 6 | A – 2 | -10 | 37W | 91 | |||
| 7 | B – 2 | 16 | 53W | 107 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.