Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 April 2005
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)
- 11
- Relative number (R)
- 51
- Observer
- TG
- Reading
- all checks consistent
- File
- 20050413.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 12 | 03E | 102 | 01E | 2 | |
| 2 | DAO – 3 | 2 | 65E | 40 | 63E | ~9.5 | |
| 3 | AX – 2 | -5 | 18W | 123 | 20W | ~1 | |
| 4 | DAO – 3 | -8 | 18W | 123 | 20W | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.