Daily Sunspot Evaluation
Observation Sheet Thursday, 9 August 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)
- 66
- Relative number (R)
- 166
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010809.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 6 | 5 | 60W | 249 | 63W | ~3 | |
| 2 | FAC – 26 | 25 | 54W | 240 | 59W | 17.5 | |
| 3 | DAC – 13 | 17 | 36W | 225 | 39W | 9.5 | |
| 4 | HA – 2 | 8 | 48E | 141 | 45E | 2 | |
| 5 | AX – 1 | 17 | 74E | 115 | 71E | - | |
| 6 | AX – 1 | -10 | 65W | 254 | 68W | - | |
| 7 | BXO – 2 | -13 | 73W | 262 | 76W | 4 | |
| 8 | DAO – 11 | -18 | 31W | 220 | 34W | 6.5 | |
| 9 | HH – 1 | -9 | 29E | 160 | 26E | ~3 | |
| 10 | HA – 3 | -8 | 69E | 120 | 66E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.