Daily Sunspot Evaluation
Observation Sheet Friday, 17 May 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)
- 3
- Number of spots (f)
- 11
- Relative number (R)
- 41
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19850517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 6 | 9 | 74E | 237 | 74E | 12 | |
| 2 | HKX – 3 | -12 | 50W | 1 | 50W | 5 | |
| 3 | HSX – 2 | -8 | 51W | 260 ⚠ | 51E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.