Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 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)
- 5
- Number of spots (f)
- 13
- Relative number (R)
- 63
- Observer
- SA
- Reading
- all checks consistent
- File
- 20060412.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | -11 | 53W | 34 | 55W | ~1.5 | |
| 2 | HA – 1 | -8 | 04E | 337 | 02E | 1 | |
| 3 | HA – 1 | -7 | 31E | 310 | 29E | 2 | |
| 4 | DAO – 8 | -3 | 44E | 297 | 42E | 6 | |
| 5 | HS – 1 | -6 | 70E | 271 | 68E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.