Daily Sunspot Evaluation
Observation Sheet Thursday, 18 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)
- 11
- Relative number (R)
- 51
- Observer
- NA
- Reading
- all checks consistent
- File
- 19920618.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 2 | 25 | 23E | 318 | 20E | 5 | 241 |
| 2 | HR – 2 | 12 | 30E | 311 | 27E | 1 | 243 |
| 3 | HR – 5 | -10 | 35W | 16 | 38W | 3 | 234 |
| 4 | HA – 2 | -11 | 03W | 344 | 06W | 1.5 | 232 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.