Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 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)
- 22
- Relative number (R)
- 62
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19840117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 6 | -13 | 27W | 274 | 30W | 5 | 7 |
| 2 | EHO – 13 | -16 | 30W | 257 ⚠ | 33W | 15 | 8 |
| 3 | ? – 2 | -4 | 70E | 177 | 67E | 7 | 9 |
| 4 | AXX – 1 | -17 | 76E | 171 | 73E | 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.