Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 September 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)
- 2
- Relative number (R)
- 22
- Observer
- FL
- Reading
- all checks consistent
- File
- 19870923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 13 | 01E | 132 | 02W | 2.78 | 68 |
| 2 | HAX – 1 | -30 | 58W | 191 | 61W | 2.79 | 69 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.