Daily Sunspot Evaluation
Observation Sheet Thursday, 8 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)
- 13
- Number of spots (f)
- 77
- Relative number (R)
- 207
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19811008.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 15 | 13 | 64W | 117 | 66W | 13 | |
| 2 | AXX – 1 | 7 | 47W | 100 | 49W | - | |
| 3 | HAX – 2 | 8 | 14W | 67 | 16W | 2 | |
| 4 | AXX – 2 | 13 | 06E | 47 | 04E | 1 | |
| 5 | AXX – 1 | 16 | 63E | 350 | 61E | - | |
| 6 | HAX – 1 | 19 | 83E | 330 | 81E | - | |
| 7 | AXX – 2 | -17 | 74W | 127 | 76W | - | |
| 8 | DAI – 12 | -9 | 42W | 95 | 44W | 12 | |
| 9 | DAO – 3 | -23 | 34W | 87 | 36W | 4 | |
| 10 | CAI – 8 | -7 | 23W | 76 | 25W | 5 | |
| 11 | EKC – 26 | -10 | 01W | 54 | 03W | 11 | |
| 12 | AXX – 1 | -18 | 57E | 356 | 55E | - | |
| 13 | ? – 3 | -19 | 76E | 337 | 74E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.