Daily Sunspot Evaluation
Observation Sheet Thursday, 17 June 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)
- 39
- Relative number (R)
- 79
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20040617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | PKC – 18 | 12 | 30E | 74 | 23E | ~17 | 408 |
| 2 | DSO – 2 | -10 | 57W | 161 | 60W | ~4 | 111 |
| 3 | HS – 1 | -12 | 17W | 121 | 20W | ~2 | 106 |
| 4 | FKI – 18 | -11 | 47E | 57 | 44E | -15.5 | 110 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.