Daily Sunspot Evaluation
Observation Sheet Friday, 20 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)
- 5
- Number of spots (f)
- 16
- Relative number (R)
- 66
- Observer
- HM
- Reading
- all checks consistent
- File
- 19840120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | -13 | 66W | 274 | 69W | 2 | 7 |
| 2 | DAO – 7 | -17 | 50W | 258 | 53W | 13 | 8 |
| 3 | DAO – 3 | -6 | 20E | 188 | 17E | 5 | 11 |
| 4 | HAX – 2 | -5 | 30E | 178 | 27E | 1 | 9 |
| 5 | CAO – 3 | -17 | 37E | 171 | 34E | 5 | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.