Daily Sunspot Evaluation
Observation Sheet Saturday, 13 July 1985
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)
- 9
- Relative number (R)
- 29
- Observer
- HG
- Reading
- all checks consistent
- File
- 19850713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 3 | 52W | 332 | 55W | 5.55 | |
| 2 | ? – 5 | -17 | 80W | 0 | 83W | 5.35 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.