Daily Sunspot Evaluation
Observation Sheet Saturday, 4 September 2004
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)
- 13
- Relative number (R)
- 33
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040904.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRE – 10 | -9 | 40W | 178 | 42W | 3.5 | 158 |
| 2 | HK – 3 | -11 | 43E | 95 | 41E | 3.5 | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.