Daily Sunspot Evaluation
Observation Sheet Sunday, 21 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)
- 2
- Number of spots (f)
- 39
- Relative number (R)
- 59
- Observer
- —
- Reading
- all checks consistent
- File
- 20050821.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRF – 25 | 17 | 16E | 157 | 19E | 7 | |
| 2 | DKC – 14 | -11 | 53W | 226 | 56W | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.