Daily Sunspot Evaluation
Observation Sheet Thursday, 22 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)
- 76
- Relative number (R)
- 156
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19811022.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 6 | 8 | 42W | 271 | 45W | 4 | |
| 2 | HAX – 2 | 19 | 21W | 250 | 24W | 1.5 | |
| 3 | CKI – 10 | 15 | 65E | 164 | 62E | 9 | |
| 4 | FKC – 26 | -11 | 45W | 274 | 48W | 16.5 | |
| 5 | DKC – 21 | -8 | 21W | 250 | 24W | 7.5 | |
| 6 | CAI – 9 | -28 | 45E | 184 | 42E | 8 | |
| 7 | HAX – 1 | -31 | 62E | 167 | 59E | 2 | |
| 8 | AXX – 1 | -14 | 76E | 153 | 73E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.