Daily Sunspot Evaluation
Observation Sheet Saturday, 15 April 2006
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)
- 2
- Number of spots (f)
- 4
- Relative number (R)
- 24
- Observer
- MB
- Reading
- all checks consistent
- File
- 20060415.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | -8 | 09W | 311 | 12W | 21 | |
| 2 | HA – 2 | -6 | 28E | 274 | 25E | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.