Daily Sunspot Evaluation
Observation Sheet Saturday, 17 September 1983
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)
- 26
- Relative number (R)
- 46
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19830917.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 25 | -13 | 07W | 63 | 10W | 7 | 288 |
| 2 | HAX – 1 | -11 | 82E | 334 | 79E | 2 | 292 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.