Daily Sunspot Evaluation
Observation Sheet Thursday, 29 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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- HM
- Reading
- all checks consistent
- File
- 19830929.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | 11 | 16E | 242 | 12E | 1 | 299 |
| 2 | ? – 2 | 298 | |||||
| 3 | AXX – 1 | -20 | 25W | 283 | 29W | 300 | |
| 4 | EHC – 26 | -19 | 10W | 268 | 14W | 14 | 296 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.