Daily Sunspot Evaluation
Observation Sheet Saturday, 20 August 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)
- 5
- Number of spots (f)
- 33
- Relative number (R)
- 83
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRE – 10 | 17 | 41E | 159 | 38E | 5.5 | |
| 2 | AX – 1 | 8 | 62E | 138 | 59E | ||
| 3 | HS – 1 | -11 | 72W | 272 | 75W | ~1 | |
| 4 | HS – 1 | -14 | 56W | 256 | 59W | 1.5 | |
| 5 | EKI – 20 | -11 | 24W | 224 | 27W | 10.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.