Daily Sunspot Evaluation
Observation Sheet Friday, 21 August 1992
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)
- 2
- Number of spots (f)
- 41
- Relative number (R)
- 61
- Observer
- HE
- Reading
- all checks consistent
- File
- 19920821.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 39 | 17 | 42W | 256 | 45W | 213 | 302 |
| 2 | HA – 2 | -20 | 50E | 164 | 42E | 215 | 309 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.