Daily Sunspot Evaluation
Observation Sheet Thursday, 27 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)
- 22
- Relative number (R)
- 62
- Observer
- MB
- Reading
- all checks consistent
- File
- 20060427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 11 | -11 | 30E | 114 | 27E | ~5.5 | |
| 2 | HA – 1 | -6 | 49E | 95 | 46E | 64 | |
| 3 | DAO – 7 | -14 | 50E | 94 | 47E | 3.4 | |
| 4 | HA – 3 | -17 | 59E | 85 | 56E | ~3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.