Daily Sunspot Evaluation
Observation Sheet Sunday, 12 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)
- 13
- Relative number (R)
- 33
- Observer
- HG
- Reading
- all checks consistent
- File
- 19840812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRI – 10 | 8 | 30W | 49 | 32W | 3 | 10481 |
| 2 | BRO – 3 | 3 | 07E | 12 | 05E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.