Daily Sunspot Evaluation
Observation Sheet Friday, 2 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)
- 14
- Number of spots (f)
- 49
- Relative number (R)
- 189
- Observer
- ED
- Reading
- all checks consistent
- File
- 19810102.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 4 | 14 | 77W | 214 | 79W | 08 | |
| 2 | DAI – 9 | 15 | 59W | 196 | 61W | 11.5 | |
| 3 | AXX – 1 | 27 | 54W | 191 | 56W | ||
| 4 | AXX – 3 | 4 | 45W | 182 | 47W | 15 | |
| 5 | AXX – 1 | 9 | 44W | 181 | 46W | ||
| 6 | AXX – 1 | 26 | 31W | 168 | 33W | ||
| 7 | BRI – 10 | 22 | 22W | 159 | 24W | 3.5 | |
| 8 | AXX – 1 | 9 | 02W | 139 | 04W | ||
| 9 | DAO – 6 | 12 | 20E | 117 | 18E | 13 | |
| 10 | HKX – 3 | -23 | 66W | 203 | 68W | 04 | |
| 11 | HKX – 6 | -6 | 48W | 185 | 50W | 3.5 | |
| 12 | HSX – 1 | -29 | 44W | 181 | 46W | 02 | |
| 13 | AXX – 2 | -7 | 19W | 156 | 21W | 15 | |
| 14 | AXX – 1 | -14 | 70E | 67 | 68E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.