Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 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)
- 12
- Number of spots (f)
- 121
- Relative number (R)
- 241
- Observer
- GT
- Reading
- all checks consistent
- File
- 19811006.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKI – 19 | 12 | 36W | 119 | 39W | 10 | |
| 2 | BXO – 6 | 20 | 09E | 71 | 06E | 7.5 | |
| 3 | DAI – 14 | 9 | 15E | 65 | 12E | 4 | |
| 4 | AXX – 2 | 11 | 22E | 58 | 19E | 1 | |
| 5 | ARX – 1 | -6 | 77W | 157 | 80W | 1.5 | |
| 6 | CAI – 5 | -15 | 62W | 142 | 65W | 9 | |
| 7 | HAX – 2 | -18 | 47W | 127 | 50W | 2.5 | |
| 8 | AXX – 10 | -19 | 28W | 108 | 31W | 2.5 | |
| 9 | AXX – 2 | -15 | 19W | 99 | 22W | 1 | |
| 10 | DAC – 34 | -10 | 13W | 93 | 16W | 10 | |
| 11 | CAO – 9 | -6 | 06E | 74 | 03E | 5.5 | |
| 12 | CSO – 17 | -11 | 28E | 52 | 25E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.