Daily Sunspot Evaluation
Observation Sheet Friday, 18 August 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)
- 2
- Number of spots (f)
- 22
- Relative number (R)
- 42
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20060818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | -13 | 72W | 161 | 75W | ~1 | |
| 2 | EKI – 21 | -14 | 32W | 121 | 35W | 16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.