Daily Sunspot Evaluation
Observation Sheet Saturday, 17 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)
- 3
- Number of spots (f)
- 53
- Relative number (R)
- 83
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20010317.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 20 | -10 | 26W | 332 | 29W | 8 | |
| 2 | AX – 2 | -11 | 72W | 18 | 75W | ~1 | |
| 3 | FAC – 31 | -8 | 25W | 331 | 28W | 16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.