Daily Sunspot Evaluation
Observation Sheet Sunday, 18 March 2001
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)
- 45
- Relative number (R)
- 65
- Observer
- TA
- Reading
- all checks consistent
- File
- 20010318.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 10 | 10 | 40W | 332 | 43W | ~8.5 | |
| 2 | FAC – 35 | -8 | 36W | 328 | 39W | ~24 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.