Daily Sunspot Evaluation
Observation Sheet Friday, 9 September 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)
- 8
- Relative number (R)
- 28
- Observer
- TG
- Reading
- all checks consistent
- File
- 20050909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 11 | 55E | 240 | 52E | ~2 | |
| 2 | EKC – 7 | -8 | 69E | 226 | 66E | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.