Daily Sunspot Evaluation
Observation Sheet Sunday, 31 July 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)
- 40
- Relative number (R)
- 80
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20050731.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 12 | 53W | 157 | 55W | 3 | |
| 2 | DAI – 19 | 13 | 06W | 110 | 08W | 8.5 | |
| 3 | DKC – 18 | 11 | 47E | 57 | 45E | 8 | |
| 4 | ? – 1 | -12 | 83E | 21 | 81E | ? |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.