Daily Sunspot Evaluation
Observation Sheet Friday, 30 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)
- 11
- Number of spots (f)
- 57
- Relative number (R)
- 167
- Observer
- GT
- Reading
- all checks consistent
- File
- 19811030.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 6 | 17 | 44W | 165 | 44W | 8 | |
| 2 | HAX – 2 | 13 | 19W | 140 | 19W | 15 | |
| 3 | AXX – 2 | 10 | 15W | 136 | 15W | ||
| 4 | CAO – 7 | 14 | 04E | 117 | 04E | 65 | |
| 5 | CAI – 7 | 7 | 15E | 106 | 15E | 4 | |
| 6 | CKI – 7 | 16 | 40E | 81 | 40E | 55 | |
| 7 | DAI – 6 | 28 | 48E | 73 | 48E | 7 | |
| 8 | HAX – 1 | -25 | 68W | 189 | 68W | 2 | |
| 9 | BXI – 7 | -22 | 40E | 81 | 40E | 45 | |
| 10 | HAX – 1 | -8 | 54E | 67 | 54E | 15 | |
| 11 | FKC – 11 | -14 | 72E | 49 | 72E | 15 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.