Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 September 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)
- 4
- Number of spots (f)
- 26
- Relative number (R)
- 66
- Observer
- AK0
- Reading
- all checks consistent
- File
- 20000913.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 4 | 13 | 40E | 183 | 38E | ~3 | |
| 2 | CRO – 9 | -35 | 41W | 264 | 43W | 8 | |
| 3 | BXO – 4 | -28 | 30W | 253 | 32W | ~4 | |
| 4 | BXO – 9 | -18 | 08W | 231 | 10W | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.