Daily Sunspot Evaluation
Observation Sheet Friday, 9 February 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)
- 10
- Number of spots (f)
- 56
- Relative number (R)
- 156
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20010209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 25 | 51W | 111 | 53W | 10 | |
| 2 | DAO – 5 | 18 | 47W | 107 | 49W | ~4.5 | |
| 3 | EAC – 13 | 12 | 18W | 78 | 20W | 12 | |
| 4 | AX – 2 | 3 | 11W | 71 | 13W | 1.5 | |
| 5 | DAO – 5 | 10 | 04W | 64 | 06W | 9 | |
| 6 | HR – 2 | 32 | 11E | 49 | 09E | 1 | |
| 7 | DAO – 2 | 3 | 76E | 344 | 74E | 4 | |
| 8 | CAO – 3 | -10 | 08W | 68 | 10W | 3.5 | |
| 9 | ESO – 8 | -10 | 16E | 44 | 14E | 12 | |
| 10 | CRI – 13 | -20 | 10E | 50 | 08E | 17 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.