Daily Sunspot Evaluation
Observation Sheet Thursday, 9 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)
- 4
- Number of spots (f)
- 35
- Relative number (R)
- 75
- Observer
- MB
- Reading
- all checks consistent
- File
- 20040909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 12 | -9 | 61W | 134 | 64W | ~9.5 | 163 |
| 2 | HK – 5 | -11 | 22W | 95 | 25W | ~3 | 159 |
| 3 | DAI – 17 | -5 | 14W | 87 | 17W | ~5.5 | 162 |
| 4 | ? – 1 | 2 | 85E | 348 | 82E | ? | 165 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.