Daily Sunspot Evaluation
Observation Sheet Sunday, 12 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)
- 30
- Relative number (R)
- 60
- Observer
- TG
- Reading
- all checks consistent
- File
- 20040912.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAF – 26 | 4 | 46E | 347 | 44E | ~9 | 165 |
| 2 | HA – 1 | -5 | 60W | 93 | 62W | 2 | 162 |
| 3 | HK – 3 | -13 | 64W | 97 | 66W | ~4 | 159 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.