Daily Sunspot Evaluation
Observation Sheet Sunday, 28 August 2005
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)
- 25
- Relative number (R)
- 65
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050828.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAO – 3 | 17 | 66W | 159 | 68W | 7.10 | |
| 2 | HS – 1 | 10 | 38W | 131 | 40W | 1 | |
| 3 | DAO – 19 | 12 | 35E | 58 | 33E | ~8 | |
| 4 | HA – 2 | -7 | 70E | 23 | 68E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.