Daily Sunspot Evaluation
Observation Sheet Thursday, 18 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)
- 2
- Number of spots (f)
- 6
- Relative number (R)
- 26
- Observer
- MS
- Reading
- all checks consistent
- File
- 20050818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | -14 | 30W | 255 | 32W | ~3 | |
| 2 | CRI – 4 | -10 | 01E | 224 | 01W | ~3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.