Daily Sunspot Evaluation
Observation Sheet Monday, 13 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)
- 46
- Relative number (R)
- 76
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20040913.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 42 | 5 | 32E | 348 | 29E | ~9.5 | 165 |
| 2 | HA – 1 | -11 | 77W | 97 | 80W | ~4 | 159 |
| 3 | HA – 3 | -5 | 71W | 91 | 74W | ~3.5 | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.