Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 August 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)
- 22
- Relative number (R)
- 62
- Observer
- MS
- Reading
- all checks consistent
- File
- 20040818.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKO – 6 | 7 | 16E | 348 | 13E | 8 | 151 |
| 2 | HR – 2 | 13 | 20E | 344 | 17E | 0.5 | 152 |
| 3 | HA – 5 | 12 | 37E | 327 | 34E | 2 | 153 |
| 4 | ? – 9 | -14 | 73W | 77 | 76W | ~10 | 146 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.