Daily Sunspot Evaluation
Observation Sheet Friday, 23 October 1981
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)
- 8
- Number of spots (f)
- 102
- Relative number (R)
- 182
- Observer
- GT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19811023.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 8 | 8 | 55W | 231 ⚠ | 58W | 6 | |
| 2 | HAX – 4 | 19 | 34W | 250 | 33W | 15 | |
| 3 | CAO – 10 | 14 | 52E | 164 | 49E | 8 | |
| 4 | TKC – 38 | -11 | 58W | 274 | 61W | 15 | |
| 5 | DKC – 18 | -8 | 33W | 249 | 36W | 7.5 | |
| 6 | CAI – 18 | -27 | 32E | 184 | 29E | 8.5 | |
| 7 | CAI – 4 | -31 | 52E | 164 | 49E | 7 | |
| 8 | AXX – 2 | -14 | 63E | 153 | 60E | 6.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.