Daily Sunspot Evaluation
Observation Sheet Thursday, 15 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)
- 48
- Relative number (R)
- 78
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 4 | 9 | 02W | 334 | 05W | 11.5 | |
| 2 | DAO – 4 | -11 | 47W | 19 | 50W | 6 | |
| 3 | EAC – 40 | -7 | 03E | 329 | 00 | 14.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.