Daily Sunspot Evaluation
Observation Sheet Saturday, 17 January 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)
- 4
- Number of spots (f)
- 29
- Relative number (R)
- 69
- Observer
- HE
- Reading
- all checks consistent
- File
- 20040117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 8 | 4 | 63W | 12 | 65W | 6 | 6 |
| 2 | HA – 2 | 11 | 52E | 257 | 50E | 1 | 9 |
| 3 | HA – 4 | -10 | 21W | 330 | 23W | 2 | 7 |
| 4 | ESI – 15 | -14 | 25E | 284 | 23E | 13.5 | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.