Daily Sunspot Evaluation
Observation Sheet Monday, 9 July 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)
- 6
- Number of spots (f)
- 48
- Relative number (R)
- 108
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20010709.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 8 | 48W | 286 | 50W | ~4 | |
| 2 | DSO – 8 | 6 | 01E | 237 | 01W | ~6 | |
| 3 | CSO – 2 | -20 | 57W | 295 | 59W | 5 | |
| 4 | HA – 7 | -19 | 22W | 260 | 24W | 2 | |
| 5 | DAO – 24 | 4 | 16E | 222 | 14E | 6.5 | |
| 6 | BXO – 3 | -10 | 39E | 199 | 37E | ~4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.