Daily Sunspot Evaluation
Observation Sheet Thursday, 17 August 2000
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)
- 12
- Number of spots (f)
- 115
- Relative number (R)
- 235
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20000817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BAO – 3 | 20 | 36W | 256 | 39W | 4 | |
| 2 | HR – 1 | 24 | 24W | 244 | 27W | 0.5 | |
| 3 | DSC – 25 | 25 | 13W | 233 | 18W | ~10 | |
| 4 | BXI – 8 | 22 | 23E | 197 | 20E | 6 | |
| 5 | HS – 10 | 15 | 30E | 190 | 27E | 4 | |
| 6 | AX – 5 | 11 | 06E | 214 | 03E | 2 | |
| 7 | HR – 1 | 13 | 69E | 151 | 66E | 0.5 | |
| 8 | EBI – 7 | -40 | 45W | 265 | 48W | 11 | |
| 9 | BXO – 6 | -10 | 29W | 249 | 32W | 4 | |
| 10 | BXI – 16 | -13 | 14W | 234 | 17W | 8 | |
| 11 | DSI – 24 | -14 | 03W | 223 | 06W | 9 | |
| 12 | HS – 9 | -5 | 19E | 201 | 16E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.