Daily Sunspot Evaluation
Observation Sheet Thursday, 17 March 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)
- 14
- Relative number (R)
- 34
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050317.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 6 | -6 | 57W | 159 | 60W | 2.10 | |
| 2 | HH – 8 | -8 | 20W | 122 | 23W | 2.3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.