Daily Sunspot Evaluation
Observation Sheet Friday, 25 December 1987
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)
- 3
- Number of spots (f)
- 6
- Relative number (R)
- 36
- Observer
- HM
- Reading
- all checks consistent
- File
- 19871225.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | -34 | 36W | 62 | 28W | 2 | 101 |
| 2 | AXX – 4 | -21 | 03 | 349 | 05W | 2 | 105 |
| 3 | ? – 1 | -34 | 83 | 263 | 81E | - | 106 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.