Daily Sunspot Evaluation
Observation Sheet Friday, 18 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)
- 17
- Relative number (R)
- 37
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 3 | -7 | 73W | 162 | 75W | ~3 | |
| 2 | DHI – 14 | -9 | 35W | 124 | 37W | ~5.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.