Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 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)
- 2
- Number of spots (f)
- 15
- Relative number (R)
- 35
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HH – 1 | 11 | 53W | 56 | 56W | 3.5 | |
| 2 | DRO – 14 | -16 | 14W | 17 | 17W | <10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.