Daily Sunspot Evaluation
Observation Sheet Friday, 13 May 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)
- 28
- Relative number (R)
- 68
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20050513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DHI – 10 | 12 | 12E | 56 | 11E | 7 | |
| 2 | DAO – 3 | -10 | 75W | 143 | 76W | 10 | |
| 3 | DAI – 10 | -13 | 17W | 85 | 18W | 7 | |
| 4 | EAO – 5 | -14 | 50E | 18 | 49E | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.