Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 January 1984
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)
- 4
- Number of spots (f)
- 23
- Relative number (R)
- 63
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19840118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | -13 | 39°W | 273 | 42°W | 7° | 27 |
| 2 | EHO – 10 | -17 | 24W | 258 | 27W | 13.5 | 4 |
| 3 | CAO – 4 | -4 | 55E | 329 ⚠ | 52E | 8 | 3 |
| 4 | AXX – 1 | -17 | 62E | 172 | 59E | 1 | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.