Daily Sunspot Evaluation
Observation Sheet Monday, 10 September 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)
- 8
- Number of spots (f)
- 145
- Relative number (R)
- 225
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20010910.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKO – 9 | 12 | 55W | 181 | 58W | ~9 | |
| 2 | BXO – 2 | 19 | 03E | 123 | 00 | 5 | |
| 3 | BXI – 7 | 22 | 12E | 114 | 09E | ~6 | |
| 4 | AX – 1 | 11 | 46E | 80 | 43E | - | |
| 5 | CSI – 22 | -18 | 28W | 154 | 31W | ~13 | |
| 6 | EAC – 18 | -17 | 01W | 127 | 04W | 15 | |
| 7 | FKC – 55 | -28 | 18E | 108 | 15E | ~28 | |
| 8 | EAC – 31 | -14 | 30E | 96 | 27E | 12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.