Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 December 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)
- 5
- Number of spots (f)
- 21
- Relative number (R)
- 71
- Observer
- GT
- Reading
- all checks consistent
- File
- 19811222.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 2 | 8 | 19E | 126 | 16E | 0.75 | |
| 2 | HSX – 4 | 11 | 29E | 116 | 26E | 3 | |
| 3 | AXX – 2 | 10 | 35E | 110 | 32E | 0.5 | |
| 4 | BXO – 9 | -25 | 38E | 107 | 35E | 4E | |
| 5 | HAX – 4 | -25 | 65E | 80 | 62E | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.