Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 November 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)
- 6
- Relative number (R)
- 26
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19871117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 5 | -25 | 02E | 119 ⚠ | 06E | 4.5 | |
| 2 | HAX – 1 | -20 | 69E | 5 ⚠ | 68E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.