Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 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)
- 31
- Relative number (R)
- 61
- Observer
- MB
- Reading
- all checks consistent
- File
- 20040915.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 29 | 5 | 07E | 348 | 04E | ~10 | 165 |
| 2 | HR – 1 | 16 | 20E | 335 | 17E | ~0.5 | 167 |
| 3 | ? – 1 | -12 | 80E | 275 | 77E | ? | 168 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.