Daily Sunspot Evaluation
Observation Sheet Friday, 16 April 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)
- 7
- Relative number (R)
- 37
- Observer
- HE
- Reading
- all checks consistent
- File
- 20040416.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | 14 | 50E | 154 | 47E | 4 | 64 |
| 2 | DSO – 4 | -16 | 43W | 247 | 46W | 9 | 62 |
| 3 | HR – 1 | -11 | 28E | 176 | 25E | 0.5 | 63 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.