Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 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)
- 4
- Number of spots (f)
- 17
- Relative number (R)
- 57
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20060411.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 6 | -11 | 35W | 30 | 38W | -19 | |
| 2 | CRO – 6 | -8 | 17E | 338 | 14E | 4 | |
| 3 | HA – 1 | -7 | 46E | 309 | 43E | 1 | |
| 4 | CAO – 4 | -3 | 59E | 296 | 56E | -15 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.