Daily Sunspot Evaluation
Observation Sheet Thursday, 7 September 2006
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)
- 3
- Number of spots (f)
- 15
- Relative number (R)
- 45
- Observer
- MB
- Reading
- all checks consistent
- File
- 20060907.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 9 | -8 | 18E | 166 | 15E | 5.5 | |
| 2 | DRO – 3 | -13 | 28E | 156 | 25E | 3.7 | |
| 3 | HK – 3 | -13 | 55E | 129 | 52E | ~4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.