Daily Sunspot Evaluation
Observation Sheet Tuesday, 18 January 1983
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)
- 26
- Relative number (R)
- 96
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19830118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HHX – 2 | 3 | 03E | 6 | 03E | 3 | 19 |
| 2 | HAX – 4 | 8 | 12E | 357 | 12E | 3 | 22 |
| 3 | HAX – 1 | 17 | 34E | 335 | 34E | 1.5 | 29 |
| 4 | AXX – 3 | 14 | 38E | 331 | 38E | 1.5 | 30 |
| 5 | HAX – 2 | -18 | 19W | 28 | 19W | 1.5 | 20 |
| 6 | DAC – 13 | -13 | 18E | 351 | 18E | 10 | 25 |
| 7 | HSX – 1 | -11 | 55E | 314 | 55E | 2 | 28 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.