Daily Sunspot Evaluation
Observation Sheet Saturday, 18 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)
- 3
- Number of spots (f)
- 39
- Relative number (R)
- 69
- Observer
- TG
- Reading
- all checks consistent
- File
- 20040918.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 24 | 5 | 35W | 349 | 38W | ~10 | 165 |
| 2 | AX – 3 | -10 | 10E | 304 | 07E | ~1 | 169 |
| 3 | EKC – 12 | -12 | 42E | 272 | 39E | ~11 | 168 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.