Daily Sunspot Evaluation
Observation Sheet Wednesday, 28 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)
- 7
- Number of spots (f)
- 40
- Relative number (R)
- 110
- Observer
- HM
- Reading
- all checks consistent
- File
- 19811028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 7 | 16 | 15W | 165 | 18W | 8 | |
| 2 | HKX – 6 | 13 | 30E | 120 | 27E | 6 | |
| 3 | AXX – 4 | 6 | 45E | 105 | 42E | 2 | |
| 4 | HAX – 1 | 15 | 69E | 81 | 66E | 2.5 | |
| 5 | DAI – 14 | -4 | 58W | 208 | 61W | 6E | |
| 6 | CAI – 6 | -26 | 36W | 186 | 39W | 11 | |
| 7 | AXX – 2 | -11 | 43E | 107 | 40E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.