Daily Sunspot Evaluation
Observation Sheet Monday, 5 January 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)
- 8
- Number of spots (f)
- 31
- Relative number (R)
- 111
- Observer
- ED
- Reading
- all checks consistent
- File
- 19810105.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 4 | 22 | 62W | 159 | 64W | 7.5 | |
| 2 | DAI – 10 | 10 | 46W | 143 | 48W | 7.5 | |
| 3 | DAO – 5 | 11 | 21W | 118 | 23W | 13 | |
| 4 | AXX – 1 | 18 | 28E | 69 | 26E | ||
| 5 | ? – 1 | -30 | 83W | 180 | 85W | 04 | |
| 6 | AXX – 1 | -7 | 61W | 158 | 63W | ||
| 7 | ARX – 1 | -13 | 34W | 131 | 36W | ||
| 8 | DAC – 8 | -15 | 50E | 47 | 48E | 09 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.