Daily Sunspot Evaluation
Observation Sheet Saturday, 7 February 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)
- 35
- Relative number (R)
- 55
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20040207.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 17 | 13 | 13W | 47 | 16W | ~10.5 | 17 |
| 2 | DKO – 18 | -8 | 08E | 26 | 05E | ~8.5 | 18 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.