Daily Sunspot Evaluation
Observation Sheet Monday, 9 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)
- 3
- Number of spots (f)
- 6
- Relative number (R)
- 36
- Observer
- HG
- Reading
- all checks consistent
- File
- 19871109.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ARX – 1 | 17 | 65E | 167 | 63E | 0.5 | 90 |
| 2 | HAX – 3 | -23 | 19W | 251 | 21W | 4.98 | 88 |
| 3 | BKO – 2 | -26 | 09W | 241 | 11W | 4.02 | 91 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.