Daily Sunspot Evaluation
Observation Sheet Saturday, 20 May 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)
- 8
- Relative number (R)
- 28
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20060520.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ORO – 4 | -12 | 42E | 156 | 40E | 5 | |
| 2 | DAO – 4 | -11 | 53E | 145 | 51E | 3.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.