Daily Sunspot Evaluation
Observation Sheet Tuesday, 25 August 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)
- 2
- Number of spots (f)
- 27
- Relative number (R)
- 47
- Observer
- HM
- Reading
- all checks consistent
- File
- 19870825.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 9 | 20 | 52W | 208 | 55W | 4.5 | 60 |
| 2 | CAI – 18 | 16 | 33E | 123 | 30E | 4 | 59 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.