Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 December 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)
- 2
- Number of spots (f)
- 10
- Relative number (R)
- 30
- Observer
- HG
- Reading
- all checks consistent
- File
- 19841204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRI – 6 | 18 | 54E | 261 | 52E | 5.5 2.5 | 187 |
| 2 | AXX – 4 | -8 | 25E | 290 | 23E | 1.5 1 | 189 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.