Daily Sunspot Evaluation
Observation Sheet Sunday, 26 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)
- 6
- Number of spots (f)
- 44
- Relative number (R)
- 104
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711226.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 17 | 21E | 46 | |||
| 2 | A – 1 | -12 | 22E | 45 | |||
| 3 | A – 1 | -14 | 04W | 71 | |||
| 4 | E – 28 | -15 | 30W | 97 | |||
| 5 | G – 11 | -14 | 45W | 112 | |||
| 6 | J – 1 | -5 | 69W | 136 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.