Daily Sunspot Evaluation
Observation Sheet Friday, 17 August 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)
- 5
- Relative number (R)
- 25
- Observer
- HM
- Reading
- all checks consistent
- File
- 19840817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRO – 3 | 3 | 69W | 24 | 72W | 4.15 | 149 |
| 2 | HAX – 2 | -10 | 71E | 244 | 68E | 2.35 | 151 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.