Daily Sunspot Evaluation
Observation Sheet Saturday, 21 November 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)
- 27
- Relative number (R)
- 77
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19811121.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 12 | 13 | 12W | 202 | 12W | 3 | |
| 2 | AXX – 2 | 9 | 61E | 129 | 61E | 35 | |
| 3 | AXX – 1 | 15 | 76E | 114 | 76E | - | |
| 4 | EKC – 7 | -17 | 72W | 262 | 72W | 16 | |
| 5 | CAO – 5 | -5 | 38W | 228 | 38W | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.