Daily Sunspot Evaluation
Observation Sheet Sunday, 21 June 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)
- 4
- Number of spots (f)
- 45
- Relative number (R)
- 85
- Observer
- YK
- Reading
- all checks consistent
- File
- 19920621.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 3 | 24 | 18W | 316 | 18W | 4 | 261 |
| 2 | DRI – 25 | 10 | 14W | 312 | 14W | 6 | 263 |
| 3 | HA – 3 | -12 | 46W | 344 | 46W | 15 | 237 |
| 4 | BXI – 14 | -27 | 10E | 288 | 10E | 7 | 249 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.