Daily Sunspot Evaluation
Observation Sheet Sunday, 8 February 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)
- 9
- Number of spots (f)
- 55
- Relative number (R)
- 145
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19810208.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 1 | 19 | 54W | 63 | 55W | 4 | |
| 2 | HSX – 1 | 3 | 11W | 20 | 12W | 1 | |
| 3 | HAX – 2 | 4 | 07E | 2 | 06E | 1.5 | |
| 4 | FKC – 26 | 13 | 36E | 333 | 35E | 20 | |
| 5 | ? – 1 | -9 | 82W | 91 | 82W | 4 | |
| 6 | EKC – 17 | -15 | 60W | 69 | 61W | 11.5 | |
| 7 | HAX – 1 | -8 | 31W | 40 | 32W | 1 | |
| 8 | HAX – 5 | -17 | 30E | 339 | 29E | 1.5 | |
| 9 | AXX – 1 | -29 | 47E | 322 | 46E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.