Daily Sunspot Evaluation
Observation Sheet Friday, 20 August 1999
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)
- 5
- Number of spots (f)
- 32
- Relative number (R)
- 82
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19990820.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 10 | 16 | 24W | 355 | 26W | 7 | |
| 2 | HK – 16 | 21 | 04W | 335 | 06W | 6 | |
| 3 | AX – 3 | 22 | 03E | 328 | 01E | 2 | |
| 4 | ? – 2 | -24 | 75E | 256 | 73E | 8 | |
| 5 | ? – 1 | -18 | 76E | 255 | 74E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.